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Results for "Trademark limitation"
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Establishing Indefiniteness Requires More Than Identifying “Unanswered Questions” Part II

by | Oct 27, 2022 |

Earlier this year, the US Court of Appeals for the Federal Circuit reversed a district court decision for relying on an incorrect standard for indefiniteness. (Nature Simulation Systems Inc. v. Autodesk, Inc). Now, in response to a motion for panel rehearing, the Federal Circuit modified its decision on rehearing deleting language. Nature Simulation Systems Inc. v. Autodesk, Inc., Case No. 20-2257 (Fed. Cir. Oct. 17, 2022) (Lourie, Dyk, Newman JJ.) (Dyk, J., dissenting)

Nature Simulations Systems asserted two patents against Autodesk (one a continuation-in-part of the other), both entitled “Method for Immediate Boolean Operations Using Geometric Facets.” According to the patents, the claimed methods are improvements upon a “Watson” method known in the prior art. The district court concluded that two terms—“searching neighboring triangles of the last triangle pair that holds the last intersection point” and “modified Watson method”—were invalid as indefinite based on “unanswered questions” regarding the scope of the claims posed by Autodesk’s expert. In the first reported decision, the Federal Circuit reversed. The Court held that the “unanswered questions” analysis used an incorrect legal standard, citing the specification as clarifying the scope of the claims and citing case law on deference to US Patent & Trademark Office examiners.

Following rehearing, the Federal Circuit slightly modified its decision in two primary ways but maintained its reversal of the district court’s ruling on indefiniteness.

First, the Federal Circuit added an explanation regarding how the specification answers the questions raised by Autodesk. The Court stated that “the language that the court stated ‘is not contained in the claim language’ is in the specification,” and cited a flowchart and accompanying description in the patent. The Court found fault in Autodesk’s argument because “[t]he claims set forth the metes and bounds of the invention; they are not intended to repeat the detailed operation of the method as described in the specification.”

Second, the Federal Circuit backed away from its previous reliance on deference to the examiner. In its earlier decision, the Court explained that the examiner had issued rejections for indefiniteness but withdrew them after amendments to the claims. The Court then spent a little over a page of the opinion explaining that, as official agency actors experienced in the technology and legal requirements for patentability, patent examiners are entitled to “appropriate deference.” Following rehearing, the Court removed the portion of the opinion addressing examiner deference entirely while maintaining the criticism that the district court gave “no weight to the prosecution history showing the resolution of indefiniteness by adding the designated technologic limitations to the claims.” In support, the Court cited cases holding that claims are construed in light of the specification and file history from the perspective of skilled artisans.

Judge Dyk again dissented, stating that “[t]he fact that a patent examiner introduced the indefinite language does not absolve the claims from the requirements of 35 U.S.C. § 112.” Judge Dyk argued that far from adopting a flawed “unanswered questions” analysis, the district court’s analysis was detailed and [...]

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Claim at Issue Must Be Substantively Allowable to Qualify for PTA

by | Sep 22, 2022 |

The US Court of Appeals for the Federal Circuit affirmed two district court decisions, finding that a patent owner who only partially prevailed in one of two appeals was not entitled to any additional patent term adjustments (PTAs) from the US Patent & Trademark Office (PTO) under 35 U.S.C. § 154(b)(1)(C) during the pendency of their district court appeals. SawStop Holding LLC v. Vidal, Case No. 2021-1537 (Fed. Cir. Sept. 14, 2022) (Newman, Linn, and Chen, JJ.)

SawStop owns two patents directed to saws with a safety feature that stops a power-saw blade upon contact with flesh. During prosecution of the application for one of the patents, SawStop appealed an obviousness rejection to the Patent Trial & Appeal Board (Board). The Board affirmed the obviousness rejection but on new grounds. The patent ultimately issued after SawStop amended the claim at issue to overcome the obviousness rejection.

Similarly, during prosecution of the application for the second patent, independent claim 1 was rejected as being anticipated and for obviousness-type double patenting while dependent claim 2 was rejected as anticipated. SawStop appealed the rejections. The Board affirmed both rejections of claim 1 but reversed the rejection of claim 2. SawStop subsequently challenged the Board’s anticipation rejection of claim 1 before the US District Court for the District of Columbia, which reversed the anticipation rejection. SawStop did not challenge the obviousness-type double patenting rejection. On remand to the Board, SawStop cancelled claim 1 and rewrote claim 2 as an independent claim. A patent subsequently issued.

Since issuance of both patents was delayed by appeals before allowance, SawStop requested PTAs under Section 154(b)(1)(C):

Subject to the limitations under paragraph (2), if the issue of an original patent is delayed due to … (iii) appellate review by the Patent Trial and Appeal Board or by a Federal Court in a case in which the patent was issued under a decision in the review reversing an adverse determination of patentability, the term of the patent shall be extended 1 day for each day of the pendency of the proceeding, order, or review, as the case may be.

The Board granted PTA “for the delay incurred in the successful reversal of the rejection of claim 2” of the second patent but denied additional PTA for both patents resulting from the appeals. SawStop filed suits in the US District Court for the Eastern District of Virginia, challenging the Board’s decision. The court granted summary judgment in favor of the PTO in both suits. SawStop then appealed to the Federal Circuit.

The Federal Circuit affirmed, finding that SawStop was interpreting Section 154(b)(1)(C) too broadly. SawStop argued in part that any examiner rejection overturned on appeal qualified as “a reversal of a determination of patentability.” The Court rejected this argument, explaining that the Board’s adverse determination of unpatentability remained before and after the appeal to the Board. That is, “the reversal of a ‘determination of patentability’ requires a determination that the claim in question is substantively allowable, not just free of [...]

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PTO Director Lays Out Limits on “Roadmapping” as Factor for Discretionary IPR Denials

by | Sep 15, 2022 |

Exercising its discretion under 35 U.S.C. § 314(a), the Patent Trial & Appeal Board (Board) denied institution of two inter partes reviews (IPRs) based on its understanding of its own precedential 2017 decision in Gen. Plastic Indus. Co. v. Canon Kabushiki Kaisha. US Patent & Trademark Office Director Kathi Vidal subsequently reversed the Board’s ruling in a precedential sua sponte decision clarifying how to apply the seven factors set forth in General Plastic. Code200, UAB v. Bright Data, Ltd., IPR2022-00861; -00862, Paper 18 (PTAB Aug. 23, 2022) (Vidal, Dir. of PTO).

In General Plastic, the Board addressed the practice of filing seriatim petitions attacking the same patent, where each petition raises a new ground for invalidity. The Board considers the General Plastic factors when determining whether to deny IPR institution to ensure efficient post-grant review procedures and prevent inequity. The seven factors are as follows:

  1. Whether the same petitioner previously filed a petition directed to the same claims of the same patent
  2. Whether at the time of filing of the first petition the petitioner knew of the prior art asserted in the second petition or should have known of it
  3. Whether at the time of filing of the second petition the petitioner had already received the patent owner’s preliminary response to the first petition or had received the Board’s decision on whether to institute review in the first petition
  4. The length of time that elapsed between the time the petitioner learned of the prior art asserted in the second petition and the filing of the second petition
  5. Whether the petitioner provided adequate explanation for the time elapsed between the filings of multiple petitions directed to the same claims of the same patent
  6. The finite resources of the Board
  7. The requirement under 35 U.S.C. § 316(a)(11) to issue a final determination no later than one year after the date on which the PTO Director notices institution of review.

In denying institution in this case, the Board explained that the petitioner’s failure to stipulate that it would not pursue the same grounds in district court “weigh[ed] strongly in favor of exercising discretion to deny institution and outweigh[ed] the fact that the Board did not substantively address the merits of the prior petition.” Director Vidal disagreed, reasoning that when a first petition is not decided on its merits, a follow-on petition affords a petitioner the opportunity to receive substantive consideration. Director Vidal further explained that factor 1 “must be read in conjunction with factors 2 and 3.” Application of factor 1 in a vacuum strips context from a petitioner’s challenges and creates an inappropriate bright-line rule for denying institution.

Proper application of the General Plastic factors requires consideration of the potential for abuse by a petitioner. Director Vidal noted the problem of “roadmapping” raised in General Plastic (i.e., using one or more Board decisions to create a roadmap for follow-on filings until the petitioner finds a ground that results in institution). A denial decision based solely on the [...]

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If You Come for the Prince, You Best Not Miss

by | Sep 15, 2022 |

In a precedential decision, the Trademark Trial & Appeal Board (Board) granted two opposers’ motions for partial judgment on their claim of false suggestion of a connection under Section 2(a) of the Trademark Act based on a trademark application to register the mark PURPLE RAIN. NPG Records, LLC, and Paisley Park Enterprises, LLC v. JHO Intellectual Property Holdings LLC, Opp. No. 91269739 (TTAB Aug. 23, 2022) (Kuczma, Adlin, Johnson, Administrative Trademark Judges) (per curiam).

JHO Intellectual Property Holdings sought to register the mark PURPLE RAIN on the Principal Register in standard characters for several dietary and supplemental energy drinks and for “Energy drinks; Isotonic drinks; Non-alcoholic drinks, namely, energy shots, Sports drinks.” Paisley Park opposed, claiming to own rights in the name, image and likeness of famed musical artist Prince. NPG also opposed, claiming to own registered and common law rights in the trademark PURPLE RAIN. Paisley Park and NPG moved for summary judgment based on an assertion of false suggestion of a connection with Prince under Trademark Act Section 2(a). JHO admitted that its proposed mark was identical to Paisley Park and NPG’s marks and that its use of such mark was without consent or permission.

“Purple Rain” is associated (and often synonymous) with Prince. Paisley Park and NPG presented as evidence, for example, that PURPLE RAIN is a certified “13x Platinum” album selling millions worldwide, the 143rd Greatest Song of All Time according to Rolling Stone magazine, and the title of an Academy-Award-winning motion picture scored by and starring Prince. Paisley Park and NPG showed that unauthorized use of PURPLE RAIN is far from unusual, citing 17 unauthorized uses in December 2021. Paisley Park and NPG also had expert surveys conducted that established the connection between Prince and “Purple Rain.” JHO’s rebuttal included conclusory statements that the surveys conducted by Paisley Park and NPG’s expert did not ask respondents about the association of “Purple Rain” with energy drinks or supplements. JHO also pointed to a list from the US Patent & Trademark Office’s databases of third-party applications and registrations that includes PURPLE RAIN or its homophone PURPLE REIGN.

In view of Paisley Park and NPG’s evidence, the Board first found that there was no genuine dispute that the opposition was within reach of the Paisley Park and NPG’s zone of interests, and they were thus entitled to oppose registration of the mark.

Turning to the merits, the Board explained that in order to prevail on their motion under Section 2(a), Paisley Park and NPG were required to establish there was no genuine dispute that:

  • JHO’s mark is the same or a close approximation of Prince’s name or identity.
  • The mark is uniquely and unmistakably pointed to Prince.
  • Paisley Park and NPG are not connected with JHO’s goods or activities related to the mark.
  • “Purple Rain” is sufficiently famous to establish a presumed connection with Prince.

On the first factor, the Board explained that the approximation must be “more than merely intended to refer or intended to [...]

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Claim Cancelation Limits but Doesn’t Prohibit Assignor Estoppel Defense

by | Aug 25, 2022 |

On remand from the Supreme Court, the US Court of Appeals for the Federal Circuit reconsidered the boundaries of the doctrine of assignor estoppel. The Federal Circuit found that the patent assignor was estopped from challenging the validity of an asserted patent because the asserted claim was not materially broader than the specific claims assigned to the patent owner. Hologic, Inc. v. Minerva Surgical, Inc., Case Nos. 2019-2054; -2081 (Fed. Cir. Aug. 11, 2022) (Stoll, Clevenger, Wallach, JJ.)

Csaba Truckai filed a patent application for a device that was designed with a moisture-permeable head to treat abnormal uterine bleeding while avoiding unintended burning or ablation. Truckai assigned the pending patent application to his company, Novacept, which was later acquired by Hologic. Truckai then founded a new company, Minerva Surgical, and developed a new device that used moisture impermeability to avoid the unwanted ablation. Hologic subsequently filed a continuation application to expand the scope of its claims to encompass applicator heads in general, regardless of moisture permeability. The US Patent & Trademark Office issued a patent on the expanded claims in 2015, and Hologic subsequently sued Minerva for patent infringement.

Hologic argued that doctrine of assignor estoppel barred Minerva from challenging the validity of the patent claims. The district court agreed and granted summary judgment of infringement. On appeal, the Federal Circuit affirmed the summary judgment of no invalidity. The Supreme Court granted certiorari and declined Minerva’s request to discard the doctrine of assignor estoppel but clarified that it comes with limits, holding that “assignor estoppel applies only when an inventor says one thing (explicitly or implicitly) in assigning a patent and the opposite in litigation against the patent’s owner.” The Supreme Court remanded to the Federal Circuit to address whether Hologic’s claim was materially broader than the one Truckai assigned. The Supreme Court explained that if the asserted claim was materially broader than the assigned claim, “then Truckai could not have warranted its validity in making the assignment and without such a prior inconsistent representation, there is no basis for estoppel.”

On remand, the Federal Circuit considered whether Truckai warranted the assigned claim’s validity at the time of assignment and whether the assigned claim was materially broader than the asserted claim.

The Federal Circuit concluded that Truckai had represented that the assigned claim was valid. The Court explained that the assigned claim was initially rejected as being anticipated, but Truckai successfully argued for its allowance. The claim was then canceled in response to a restriction requirement, but such cancellation did not speak to the claim’s patentability because an assignee would understand that it could later prosecute the claim’s subject matter under standard patent practice. Therefore, cancelation did not nullify the claim, and it “remained viable for further prosecution.” Additionally, the assignment was not just to the rights to the application, but to the rights to any continuation, continuation-in-part or divisional patent applications not yet filed. When presenting the application, Truckai signed [...]

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Too Little Too Late: No Tenable Misappropriation Claim Based on 11-Year-Old Prototype

by | Aug 11, 2022 |

In a dispute between an employer and a former employee, the US Court of Appeals for the Seventh Circuit affirmed a district court’s grant of summary judgment against an employer asserting trade secret misappropriation and breach of implied-in-fact contract claims relating to an 11-year-old prototype developed by a former employee. The Court also affirmed the district court’s finding of litigation misconduct by the former employer but vacated the lower court’s award of attorneys’ fees, remanding the case for a more detailed justification for the considerable award. REXA, Inc. v. Chester, Case Nos. 20-2953; -3213; -2033 (7th Cir. July 28, 2022) (Wood, Hamilton, Brennan, JJ.)

Mark Chester is a former employee of Koso America, a manufacturer of hydraulic actuators. Chester participated in a 2002 project at Koso that sought to develop a new flow matching valve for Koso’s actuators. While the project team failed to design a new flow matching valve, they did manage to develop an experimental prototype of an actuator with solenoid valves. Koso abandoned the new design because of the improbability of commercial success, and the prototype was disassembled. Chester—who had never signed a confidentiality or employment agreement with Koso—resigned from Koso in 2003 and later joined MEA Inc. in 2012. In 2013, 11 years after developing the Koso prototype, Chester helped MEA design a new actuator with solenoid valves and an improved motor. MEA filed a patent application in 2017 claiming the actuator, and the US Patent & Trademark Office issued a notice of allowance in 2018 based on the improved motor limitations.

REXA, a successor company to Koso, sued Chester and MEA for misappropriation under the Illinois Trade Secrets Act (ITSA) and for breach of an implied-in-fact contract. REXA alleged that MEA and Chester misappropriated the 2002 designs by filing the 2017 patent application and by incorporating the 2002 designs into MEA’s Hawk brand actuator, and that Chester breached an implied-in-fact obligation to assign any patent rights associated with the 2017 application to REXA. Chester and MEA accused REXA of improper conduct during discovery after REXA appended a confidentiality agreement that Chester had never received to Chester’s 2002 bonus letter and used the manipulated document during Chester’s deposition. The parties filed cross motions for summary judgment. The district court ruled for Chester and MEA and awarded them almost $2.4 million in attorneys’ fees for REXA’s litigation misconduct. REXA appealed.

Misappropriation of Trade Secrets

The Seventh Circuit first considered the trade secret misappropriation claim, specifically whether REXA had identified a trade secret with enough specificity. The ITSA requires that a plaintiff “present a specific element, or combination of elements, that is unknown to the trade and was allegedly misappropriated.” Applying this standard, the Court found that REXA had not identified any protectable trade secrets because it had broadly asserted that the “2002 designs” qualified as trade secrets without explicitly identifying an element that was not well known in the industry.

The Seventh Circuit further concluded that even if REXA had identified a specific and protectable trade secret, [...]

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Missed Connection: Avoid Claim Construction Rendering Independent Claim Narrower Than Dependent Claim

by | Apr 14, 2022 |

The US Court of Appeals for the Federal Circuit vacated a district court’s claim constructions concerning generic independent claims that were amended after a species restriction requirement, because the district court disregarded the doctrine of claim differentiation after incorrectly concluding that the examiner had mistakenly rejoined withdrawn claims. Littelfuse, Inc. v. Mersen USA EP Corp., Case No. 21-2013 (Fed. Cir. Apr. 4, 2022) (Prost, Bryson, Stoll, JJ.)

Littelfuse owns a patent directed to a fuse end cap for providing an electrical connection between a fuse and an electrical conductor. The specification teaches three embodiments of the invention:

  1. A single-piece machined end cap comprising a mounting cuff and a terminal
  2. A single-piece stamped end cap comprising a mounting cuff and a terminal
  3. A two-piece assembled end cap comprising a mounting cuff, a terminal and a fastening stem attaching the mounting cuff to the terminal.

The originally filed claims included independent claims covering an end cap with a mounting cuff and a terminal, and dependent claims directed to the three embodiments. The claims directed to the two-piece assembled end cap embodiment contained the limitation that the terminal is press-fit onto the fastening stem.

During prosecution, the examiner issued a restriction requirement, asserting that the independent claims were generic to the three species in the dependent claims. Littelfuse elected to prosecute the assembled end cap species and the examiner withdrew the claims directed to the other embodiments. In response to a novelty rejection, Littelfuse amended the independent claims by adding the fastening stem element without specifying that the terminal is press-fit onto the stem. After allowing the amended independent claims, the examiner concluded that the previously withdrawn claims “require all the limitations of the . . . allowable claims,” and thus rejoined them.

Littelfuse sued Mersen for selling allegedly infringing fuses. The parties asked the district court to determine whether the fastening stem element in the independent claims limited Littelfuse’s patent to multi-piece end caps, despite the rejoined dependent claims being directed to one-piece embodiments. The district court found that the claim language, the specification and the prosecution history required the invention to have a multi-piece construction. First, the district court determined that the plain meaning of “fastening stem” was “a stem that attached or joins the other two components of the apparatus.” The district court then noted that the fastening stem was only mentioned in the specification in relation to the multi-piece embodiment in which the terminal is joined to the mounting cuff by the fastening stem. While Littelfuse argued that the US Patent & Trademark Office’s rejoining of the withdrawn claims meant that the independent claims covered unitary and multi-piece embodiments, the district court reasoned that the claims were rejoined based on a “misunderstanding” because they referred to the original independent claim, which did not include a fastening stem. In light of the district court’s finding that the independent claims covered only a multi-piece apparatus, the parties stipulated to non-infringement. Littelfuse appealed.

Applying the doctrine of claim differentiation, the [...]

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#Blessed? Preliminary Injunction Related to Social Media Accounts Vacated

by | Feb 3, 2022 |

Addressing a dispute between a bridal designer and her former employer regarding the use of the designer’s name and control of various social media accounts, the US Court of Appeals for the Second Circuit affirmed the district court’s preliminary injunction prohibiting the designer from using her name(s) in commerce, vacated the portion of the preliminary injunction granting the employer exclusive control over the social media accounts and remanded the case for further consideration by the district court. JLM Couture, Inc. v. Gutman, Case No. 21-870 (2d Cir. Jan. 25, 2022) (Park, J.) (Newman, J., concurring in part and dissenting in part) (Lynch, J., concurring in part and dissenting in part).

Hayley Paige Gutman worked for JLM Couture from 2011 to 2020, during which time she designed bridal and bridesmaid dresses and developed the Hayley Paige brand. Hayley Paige brand apparel generated hundreds of millions of dollars in sales, and Gutman’s fame (and social media account followers) grew alongside the brand’s sales revenue. Gutman and JLM’s relationship began to break down in 2019. Following the parties’ failed contract negotiations, Gutman locked JLM out of her Instagram account and changed the account bio to indicate that it was a “personal and creative” account.

JLM subsequently sued Gutman for breach of contract, trademark dilution, unfair competition, conversion of social media accounts and trespass to chattels on social media accounts, among other things. The district court agreed with JLM that Gutman had breached the contract but declined to decide “whether JLM had shown a likelihood of success on its conversion and trespass claims or opine on the ‘novel’ and ‘nuanced’ question of who owns the [social media accounts].” The district court granted a temporary restraining order and then a preliminary injunction barring Gutman from changing, using and/or controlling the social media accounts and using the names “Hayley,” “Paige,” “Hayley Paige Gutman,” “Hayley Gutman,” “Hayley Paige” or any derivate thereof (collectively, the designer’s name) in commerce. Gutman appealed.

Gutman argued that the district court erred in concluding that she likely breached the noncompete and name-rights provisions of the employment contract, that JLM’s breach of the contract prohibited it from seeking injunctive relief and that the social media accounts should not have been assigned to JLM. The Second Circuit rejected Gutman’s contract-related arguments and disagreed with the proffered alternative interpretations of the text, concluding that the district court did not err in prohibiting Gutman from any use of the designer’s name in commerce. With respect to the social media accounts, however, the Court held that the preliminary injunction was overbroad because “the character of the district court’s relief—a grant of perpetual, unrestricted, and exclusive control throughout the litigation—sounds in property, not in contract. Yet the district court disclaimed any effort to ground the [preliminary injunction] on its evaluation of the ownership question.” The Court concluded it was “unclear on what basis the district court excluded Gutman from using the Disputed Accounts and granted total control to JLM.” Thus, the Court remanded the case for the district [...]

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Third Circuit Orders Second Look at Delays and Disgorgement of Profits

by | Aug 26, 2021 |

In a long-running trademark dispute between two charitable organizations, the US Court of Appeals for the Third Circuit found that the appellee did not preserve its challenge to the district court’s denial of summary judgment on its trademark cancelation claims, the appellant waived any challenge to the validity of the defendant’s mark and the district court did not abuse its discretion by declining to award enhanced monetary relief or prejudgment interest. Kars 4 Kids Inc. v America Can!, Case Nos. 20-2813; -2900 (3rd Cir., August 10, 2021) (Shwartz, J.) The Court also vacated-in-part and remanded for the district court to reexamine its laches and disgorgement conclusions under applicable law.

As charitable organizations that sell donated vehicles to fund children’s programs, both America Can (as CARS FOR KIDS) and Kars 4 Kids have used similar trademarks since their respective starts in the early- to mid-1990s. In 2003 and 2013, America Can sent cease and desist letters to Kars 4 Kids after seeing its advertisements in the state of Texas. In 2014, Kars 4 Kids sued America Can for federal and state trademark infringement, unfair competition and trademark dilution claims. Less than one year later, America Can filed its own suit—alleging the same claims—plus a petition to cancel a Kars 4 Kids trademark registration and seeking a nationwide injunction and financial compensation.

Both parties appeal from a denial of their respective summary judgment motions as well as (1) the jury finding that Kars 4 Kids willfully infringed America Can’s trademark rights in Texas, (2) the rejection of America Can’s petition for cancellation of a KARS FOR KIDS trademark registration finding that the registration was not knowingly procured by fraudulent means, (3) the conclusion that laches did not apply against America Can’s claims, (4) disgorgement of Kars 4 Kids profits in Texas totaling about $10.6 million, (5) rejection of enhanced monetary relief and (6) an injunction against Kars 4 Kids with respect to use of its trademark in Texas and from using the carsforkids.com domain name. On appeal, Kars 4 Kids also renewed its motion for judgment as a matter of law, including an argument that America Can’s trademark is invalid.

The Third Circuit rejected Kars 4 Kids’ effort to overturn the jury’s liability verdict, concluding that Kars 4 Kids failed to preserve its challenge to the validity of the CARS FOR KIDS trademark when it left that issue out of its Rule 50(a) motion. Instead, evidence of America Can’s continuous use of the CARS FOR KIDS mark well prior to 2003 predated Kars 4 Kids’ first use of its trademark in Texas in 2003 and established America Can’s ownership of the CARS FOR KIDS trademark in Texas.

However, after examining the laches claim, the Third Circuit explained that it considered (1) the plaintiff’s inexcusable delay in bringing suit and (2) prejudice to the defendant as a result of the delay. With no statute of limitations under the Lanham Act, the parties agreed that their claims are properly analogized to New Jersey’s six-year [...]

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What You Say Can and Will be Used Against You – Prosecution History and Prior Infringement Arguments

by | Jun 10, 2021 |

Noting patent owner’s prior litigation statements, the US Court of Appeals for the Federal Circuit upheld a district court ruling that a clear and unmistakable disclaimer in the prosecution history affected claim construction of an asserted patent. SpeedTrack, Inc. v. Amazon.com, Inc., Case No. 20-1573 (Fed. Cir. June 3, 2021) (Prost, J.)

In 2009, SpeedTrack filed suit against various online retailers alleging infringement of its patent directed to a method for accessing files in a filing system leveraging “category descriptions” to aid in organizing the files. The patent describes associating category descriptions with files using a “file information directory.” A “search filter” then searches the files using their associated category descriptions. A limitation that “the category descriptions hav[e] no predefined hierarchical relationship with such list or each other” was added during prosecution to overcome a prior art reference that leveraged hierarchical field-and-value relationships.

The district court initially adopted a proposed claim construction that lacked any reference to a field-and-value relationship, noting that the construction “account[ed] for the disclaimers made during prosecution.” Following a motion by SpeedTrack, the court concluded there was still a fundamental dispute about the scope of the claim term. After further analyzing SpeedTrack’s prosecution history, the court concluded that the history “demonstrate[d] clear and unambiguous disavowal of category descriptions based on hierarchical field-and-value systems” and issued a second claim construction order explicitly disclaiming “predefined hierarchical field-and-value relationships” from the scope of “category descriptions.” SpeedTrack subsequently stipulated to noninfringement under the second claim construction and appealed.

On appeal, the Federal Circuit stressed that prosecution-history disclaimer can arise from both claim amendments and arguments. Here, the prosecution history showed that the applicants “repeatedly highlighted predefined hierarchical field-and-value relationships” as a difference between the prior art and the patent claims in no uncertain terms. That SpeedTrack distinguished the prior art on other grounds did not moot its disclaimer statements.

The Federal Circuit also noted that SpeedTrack argued in litigation against another defendant that the purpose of the amendment was to distinguish the category descriptions from attributes that “have a ‘hierarchical’ relationship between fields and their values.” While the Court agreed with SpeedTrack that such litigation statements were not a disclaimer on their own (since they were not the inventors’ prosecution statements), these litigation statements further supported not accepting SpeedTrack’s arguments. The Court reminded SpeedTrack that it has cautioned (in Aylus and Southwall) that “the doctrine of prosecution disclaimer ensures that claims are not ‘construed one way in order to obtain their allowance and in a different way against accused infringers.’”

After assessing SpeedTrack’s prior statements, the Federal Circuit considered whether the disclaimer was clear and unmistakable. The Court concluded it was. In rejecting SpeedTrack’s argument that prior decisions not expressly finding disclaimer supported that prosecution statements were not clear and unambiguous, the Court noted the construction had not been fully considered in those judgments. Similarly, the Court rejected the notion that the district court’s issuance of a second claim construction order showed there was no clear and [...]

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