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Inventorship Hosed Clean: Contribution, Corroboration and Collaboration Prove Joint Invention

The US Court of Appeals for the Federal Circuit affirmed a decision to correct inventorship, finding that the alleged joint inventor’s contribution to a claimed invention was significant and adequately corroborated by evidence. Blue Gentian, LLC v. Tristar Products, Inc., Case Nos. 21-2316; -2317 (Fed. Cir. June 9, 2023) (Prost, Chen, Stark, JJ.)

Blue Gentian owns utility and design patents directed to an expandable hose. Prior to filing the first patent application, Michael Berardi (the sole inventor of the asserted patents and Blue Gentian’s principal) met with non-party Gary Ragner to discuss investing in Ragner’s expandable hose. Berardi had no experience designing hoses at the time of the meeting. Berardi testified that he came up with the idea of his hose after watching a demonstration video of Ragner’s hose but before the meeting. At the meeting, Ragner disclosed a prototype and documents relating to his hose and discussed the inner components of the hose. Berardi built his first prototype a day after the meeting and filed his first patent application three months later. Blue Gentian subsequently filed suit against Tristar for infringement of its expandable hose patents. Tristar counterclaimed to correct inventorship of the patents, alleging that Ragner should have been named a co-inventor.

A court may order a correction of inventorship when it determines that an inventor has been erroneously omitted from a patent. The inventors listed on an issued patent, however, are presumed to be the only true inventors. Thus, a party must prove incorrect inventorship by clear and convincing evidence. An alleged joint inventor’s testimony standing alone is insufficient to establish inventorship by clear and convincing evidence; the testimony must be corroborated by evidence. A joint inventor must contribute significantly to the invention’s conception or reduction to practice, and the contribution must involve some collaboration with the other inventor.

The district court, after an evidentiary hearing, entered judgment on the inventorship counterclaim in Tristar’s favor and ordered correction of the patents under 35 U.S.C. § 256. Blue Gentian appealed.

The Federal Circuit found that Ragner conveyed three key elements of the hose to Berardi at the meeting and that these elements were a significant contribution to the conception of at least one claim of each asserted patent. The Court noted that these were the very elements Blue Gentian used to distinguish the invention from the prior art, establishing the element’s significance. The Court also found that Ragner’s testimony about conveying the three elements to Berardi at the meeting was adequately corroborated by both physical and circumstantial evidence. The evidence showed the similarity between Ragner’s disclosed prototype and Berardi’s first prototype, and documentary evidence showed Ragner’s familiarity with the three elements before the meeting. Finally, the Court found sufficient collaboration between Berardi and Ragner based on the information exchanged at the meeting, including Ragner’s prototype, confidential documents and verbal explanations about alternative hose designs.

The Federal Circuit dismissed Blue Gentian’s argument that claim construction was needed before analyzing Ragner’s contribution because Blue Gentian did not identify a dispute [...]

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Absent Nexus Secondary Considerations Come in Second

Addressing the nexus between a secondary consideration and the claimed invention in assessing obviousness, the US Court of Appeals for the Federal Circuit reversed a Patent Trial & Appeal Board finding of nonobviousness because the Board erred in its nexus analysis regarding secondary considerations. Yita LLC v. MacNeil IP LLC, Case Nos. 22-1373; -1374 (Fed. Cir. June 6, 2023) (Taranto, Chen, Stoll, JJ.)

Yita petitioned for inter partes review (IPR) of all claims of two patents. The patents share a common specification and cover vehicle floor trays that are theraformed from a polymer sheet of substantially uniform thickness. These trays (illustrated below) were designed to closely conform to the walls of the vehicle foot well so that the trays would stay in place once installed.

The Board found that the claims of one of the patents were not obvious even though an artisan would have been motivated to combine the prior art asserted (which disclosed the “close conformance” limitation) and would have had a reasonable expectation of success because the evidence of secondary considerations was overpowering and included a nexus between the evidence of success and the patented invention. The Board also found that the claims of the other patent were not obvious because the “1/8 inch limitation” regarding the thickness of the foot well was not disclosed in the prior art. The Board declined to consider Yita’s argument, which was raised for the first time in its reply brief. Yita appealed.

Yita argued that the Board committed a legal error in its analysis of the secondary consideration evidence for the first patent and abused its discretion by not considering the argument Yita raised in its reply brief regarding the other patent.

On the secondary considerations issue, the Federal Circuit explained that the Board erred in finding a nexus between the secondary consideration evidence of success and the claimed invention because the Board exclusively related to a feature that was well-known in the prior art (i.e., the close conformance between the tray and the vehicle floor). The Court explained that where the prior art teaches a well-known feature and an artisan would have been motivated to combine such prior art with an expectation of success, any secondary consideration that is exclusively related to the well-known feature will not rescue the claim from obviousness. The Court noted that while secondary considerations can be linked to an individual element of the claimed invention or to an inventive combination of elements, here the Board relied on secondary consideration evidence that was related entirely to the already well-known close conformance of the tray and vehicle floor.

The Federal Circuit next addressed Yita’s argument that the Board should have considered an argument raised in Yita’s reply brief regarding the 1/8-inch limitation. Yita failed to raise the argument that it would have been obvious to modify a prior art reference to arrive at the “1/8 inch limitation” [...]

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Obviously Prima Facie Case Overcome by Secondary Considerations

The US Court of Appeals for the Federal Circuit affirmed the Patent Trial & Appeal Board, holding that the Board did not err in finding certain challenged claims nonobvious and not unpatentable based on a showing of several objective criteria of nonobviousness and a nexus of the evidence to a commercial product embodying the claimed invention. Medtronic, Inc. v. Teleflex Innovations S.A.R.L., Case No. 21-2357 (Fed. Cir. June 05, 2023) (Moore, C.J.; Lourie, Dyk, JJ.) and Medtronic, Inc. v. Teleflex Innovations S.A.R.L., Case No. 21-2359 (Fed. Cir. June 05, 2023) (Moore, C.J.; Lourie, Dyk, JJ.)

Teleflex developed and patented a novel catheter-based stenosis intervention system that successfully mitigated long-standing risks intrinsic to existing catheter-based intervention systems, in particular damage to the coronary artery from guide catheter dislodgement or a catheter’s distal tip (i.e., the end of the catheter farthest from the insertion site). The preferred embodiments incorporated into Teleflex’s extremely successful GuideLiner products comprised a proximal substantially rigid portion (yellow), a reinforced portion (blue) and a distal flexible tip (pink), as illustrated below.

The catheters were sized so they could be inserted through standard guide catheters and thus were coined guide extension catheters. This innovative nesting feature increased guide catheter backup support while the guide extension catheter’s soft distal end was less likely to cause tissue damage once deeply inserted into patients. Teleflex’s guide extension catheters also were optimized for receiving interventional cardiological devices. This optimized function was a combination of the catheter’s coaxial lumen, that lumen’s diameter being no more than one French (i.e., 1/3 mm) less than the diameter of the guide catheter, and a proximal side opening that featured a double incline design like that illustrated above.

Teleflex’s GuideLiner was introduced in 2009 and enjoyed “undisputed commercial success and industry praise.” In 2019, Medtronic introduced its competing guide extension catheter (Telescope) and filed six inter partes review (IPR) petitions against Teleflex’s extension guide catheter family. Three of Medtronic’s petitions asserted that the challenged claims in three of Teleflex’s patents were obvious over the evacuation sheath assembly with a distal side opening used to aspirate embolic material while occluding blood flow using sealing balloons disclosed in a prior art reference (Ressemann). The other three petitions challenged claims of the other Teleflex patents as being obvious over a support catheter for delivering angioplasty balloons disclosed in a prior art reference (Kontos).

Medtronic specifically asserted that the following three elements of Teleflex’s claimed catheters were obvious:

  1. A proximal side opening. Medtronic argued that it would have been obvious to replace the proximal funnel structure of Kontos’s support catheter with the distal side opening of Ressemann’s evacuation sheath assembly.
  2. A catheter diameter that is no more than one French less than a corresponding guide catheter. Medtronic argued that in view of prior art mother-and-child dual catheter systems in which the child catheter’s diameter is no more [...]

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Well Runs Dry: Summary Judgment Denial Supports Non-Exceptional Case Finding

The US Court of Appeals for the Federal Circuit affirmed a district court’s denial of attorneys’ fees, explaining that when a district court denies summary judgment and allows a plaintiff’s case to proceed, the district court effectively determines that the position of the party opposing summary judgment is not objectively baseless. OneSubsea IP UK Limited v. FMC Techs, Inc., Case No. 22-1099 (Fed. Cir. May 23, 2023) (Moore, Clevenger, Dyk, JJ.)

OneSubsea and FMC compete in the subsea oil and gas exploration and extraction industry. In March 2015, OneSubsea filed a lawsuit against FMC alleging infringement of 95 claims across 10 OneSubsea patents. After the district court issued its claim construction ruling, FMC moved for summary judgment of noninfringement. OneSubsea opposed. While the summary judgment motion was pending, the Patent Trial & Appeal Board instituted inter partes review (IPR) proceedings on a subset of the asserted patents. FMC argued that while a stay of district court proceedings would be appropriate, it was unnecessary in light of its pending summary judgment motion. In August 2016, the district court denied summary judgment and stayed the case.

The case remained stayed for three years, during which time the Board invalidated 76 claims. In 2019, the district court lifted the stay. At a pre-trial hearing in 2020 discussing whether additional discovery was needed to address summary judgment, FMC doubted the need for more discovery and pointed to the 3,200 record pages illustrating differences between the designs of the accused device and the patented devices. In response, the district court stated, “And you really think I’m going to be able to grant summary judgment on that?” After the hearing, FMC renewed its summary judgment motion, which OneSubsea opposed. In reply, FMC moved to exclude the report of OneSubsea’s expert because he applied the wrong claim construction. Ultimately, the district court granted FMC’s motion to exclude and its motion for summary judgment.

In 2021, FMC moved for attorneys’ fees based on OneSubsea’s “substantively weak infringement claims” after the claim construction order was issued and “litigation misconduct.” After briefing was complete, the district court announced that the case had been reassigned to another judge following the retirement of the original assigned judge. The new judge rejected FMC’s view that OneSubsea’s case was objectively baseless and further rejected FMC’s claims of litigation misconduct. FMC appealed.

As a threshold matter, FMC argued that the Federal Circuit should apply de novo review instead of an abuse-of-discretion standard because the new judge only briefly “lived with the case” and should be disqualified from exercising discretion in deciding FMC’s attorneys’ fees motion. The Court rejected FMC’s invitation to change the standard of review, citing the substantial body of law in which appellate courts have consistently reviewed successor judges’ decisions on discretionary issues for abuse of discretion.

Turning to the merits, the Federal Circuit found that FMC’s exceptional case argument lacked merit. The Court explained that the argument disregarded the district court’s observation that FMC’s demand for a prompt favorable noninfringement judgment based [...]

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The Fondues and Don’ts of Certification Marks

The US Court of Appeals for the Fourth Circuit affirmed a summary judgment grant in favor of the opposers of a certification mark application for the trademark GRUYERE to designate cheese that originates in the Gruyère region of Switzerland and France. The Court found that the term “gruyere” is generic because consumers of cheese understand the term to refer to a category of cheese that can come “from anywhere.” Interprofession du Gruyere; Syndicat Interprofessionnel du Gruyere. v. U.S. Dairy Export Council; Atalanta Corporation; Intercibus, Inc., Case No. 22-1041 (4th Cir. March 3, 2023) (Gregory, Thacker, Rushing, JJ.)

In the United States, a certification mark is a type of trademark used to show consumers that particular goods or services, or their providers, have met certain standards. Unlike a typical trademark, a certification mark is not used by the owner of the mark (the certifier) but instead controls how others use the mark.

In an approach similar to the preceding certifiers of ROQUEFORT® and REGGIANO®, the Swiss Consortium Interprofession du Gruyère (IDG) and French consortium Syndicat Interprofessionnel du Gruyère believed that the term “gruyere” should only be used to label cheese produced in the Gruyère region of Switzerland and France. In 2010, IDG applied to the US Patent & Trademark Office (PTO) to register LE GRUYERE as a certification mark but was refused registration on grounds that “gruyere is a generic designation for cheese.” In 2013, the PTO granted IDG a certification mark registration for LE GRUYERE in a specific design form, paired with the word “Switzerland,” the letters “AOC” and a stylized Swiss cross. IDG undertook efforts to enforce the mark and sent letters to several US cheese retailers and manufacturers demanding that they cease labeling their non-Swiss cheeses as gruyere.

In 2015, IDG again attempted to register the term GRUYERE on its own as a certification mark. The U.S. Dairy Export Council, Atalanta Corporation and Intercibus melted together to throw a wedge in the process, opposing the application for the mark on grounds that “gruyere” was generic for cheese and, therefore, ineligible for protection as a certification mark. The Trademark Trial & Appeal Board (Board) found that the term “gruyere” was generic because cheese consumers understand it to be a designation for “a category within the genus of cheese that can come from anywhere.” IDG filed a complaint in the US District Court for the Eastern District of Virginia challenging the Board’s decision. Ultimately, the district court granted the opposers’ motion, finding that the factual record demonstrated that “gruyere” refers to a generic type of cheese without reference to the geographic region where the cheese is produced. IDG appealed.

The Fourth Circuit began by explaining that certification marks, like typical trademarks, include a bar on the registration of terms that are generic for the applied-for product or service category. The Court framed the genericness inquiry as whether “members of the relevant public primarily use or understand the term sought to be protected to refer to the genus of goods . [...]

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Charter Schools Aren’t Immune from Trademark Suits

The US Court of Appeals for the Fifth Circuit affirmed a district court’s dismissal of a trademark suit against a charter school operator and public school district in Texas but explained that the charter school was not automatically immune from lawsuits based on sovereign immunity. Springboards to Education, Inc. v. McAllen Indep. School District, Case Nos. 21-40333; -40334 (5th Cir. Mar. 8, 2023) (Smith, Duncan, JJ.) (Oldham, J., concurring).

Springboards sells products to school districts in connection with its Read a Million Words Campaign. The campaign incentivizes school children to read books through promises of induction into the Millionaires’ Reading Club and access to rewards such as t-shirts, backpacks and fake money. Springboards’s goods typically bear any combination of trademarks that the company registered with the US Patent & Trademark Office, including “Read a Million Words,” “Million Dollar Reader,” “Millionaire Reader” and “Millionaires’ Reading Club.”

Springboards filed a complaint for trademark infringement, trademark counterfeiting and false designation of origin against McAllen Independent School District (MISD), a public school district in Texas, and IDEA Public Schools, a nonprofit organization operating charter schools in Texas. Both MISD an IDEA moved to dismiss for lack of subject matter jurisdiction, arguing that they were arms of the state and thus entitled to sovereign immunity. They also moved for summary judgment for lack of infringement. The district court ruled that only IDEA enjoyed sovereign immunity and accordingly granted IDEA’s motion to dismiss but denied MISD’s. The district court granted MISD’s motion for summary judgment after concluding that Springboards could not establish that MISD’s program was likely to cause confusion with Springboards’s trademarks. Springboards appealed.

The Fifth Circuit began with the jurisdictional issue of whether IDEA and MISD enjoyed sovereign immunity. The Court explained that determining whether an entity is an arm of the state is governed by the Clark factors, which were set forth in the Fifth Circuit’s 1986 decision in Clark v. Tarrant County. Those factors are as follows:

  1. Whether state statutes and case law view the entity as an arm of the state
  2. The source of the entity’s funding
  3. The entity’s degree of local autonomy
  4. Whether the entity is concerned primarily with local, as opposed to statewide, problems
  5. Whether the entity has the authority to sue and be sued in its own name
  6. Whether the entity has the right to hold and use property.

The Fifth Circuit analyzed each of the factors and concluded that IDEA was not an arm of the state. The Court found that factors 1 and 3 favored sovereign immunity while factors 2, 4, 5 and 6 did not. The Court’s decision focused heavily on factor 2, explaining that the inquiry under factor 2 has two parts: the state’s liability in the event there is a judgment against the defendant, and the state’s liability for the defendant’s general debts and obligations. The district court had concluded that factor 2 weighed in favor of immunity because 94% of IDEA’s funding came from the state and federal sources. The [...]

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Little Weight Given to Conclusory Expert Declaration That Repeats IPR Petition Verbatim

The US Patent & Trademark Office Director affirmed and designated as precedential a Patent Trial & Appeal Board (Board) decision denying institution of an inter partes review (IPR) petition where the expert declaration presented conclusory assertions without underlying factual support and repeated verbatim the petitioner’s argument. Xerox Corp. v. Bytemark, Inc., IPR2022-00624 (PTAB Aug. 24, 2022) (Wood, Grossman, Tartal, APJs); Xerox Corp. v. Bytemark, Inc., IPR2022-00624 (Feb 10, 2023) (Vidal, Dir.)

Bytemark owns a patent directed to a method and system for distributing electronic tickets. According to the patent, a user can procure and store an electronic ticket on a device such as a mobile phone, and when the user presents the ticket, the ticket taker can verify the ticket by inspecting a visual object that a human can perceive without a machine scan. In addition to using a validating visual object, the patent teaches data integrity checking to ensure that the ticket data and the software managing that ticket data on the user’s device has not been altered improperly. As to the data integrity concept, the claims of the patent recite a server that is configured to “store in a data record associated with the user account a data value indicating the fraudulent activity” (fraud limitation).

Xerox filed an IPR petition challenging certain claims of the patent as obvious over the Terrell prior art reference in combination with various secondary references. Xerox argued that Terrell disclosed that after fraudulent activity is detected, “the purchaser of the ticket could be blocked from further use of the system or pursued in respect of their potential fraud.” Xerox asserted that a skilled artisan would understand that such blocking would require recording the blocking in a data record associated with that user’s account, and would find it obvious that blocking the account of the purchaser from further use of the system would include storing a data value indicating the fraudulent activity in a data record associated with the user account.

Bytemark responded that Terrell, at most, taught blocking a ticket purchaser from further use of the Terrell system based on potential fraud, but nowhere indicated that this would be achieved by using a data value indicating fraudulent activity, as opposed to some other manner of blocking a user, such as deleting the user’s account or reporting the user for fraud. Bytemark further argued that Xerox’s argument that a skilled artisan would find the fraud limitation obvious was conclusory and an improper attempt to use a skilled artisan’s common knowledge to supply a wholly missing claim limitation without evidentiary support.

The Board agreed with Bytemark, finding that Xerox did not provide sufficient evidence or persuasive reasoning to support either of Xerox’s arguments. The Board explained that Terrell taught blocking the purchaser rather than the account of the purchaser and that it was far from clear that blocking the purchaser would “require” recording the blocking in a record in the purchaser’s account, as opposed to deleting the purchaser’s account altogether. The Board noted that the [...]

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When It Comes to Claim Construction, Prosecution History and Specification Rule

Addressing claim constructions across two patents that ultimately led to noninfringement findings by a district court, the US Court of Appeals for the Federal Circuit affirmed one construction because it was supported by the prosecution history but reversed another because it was unsupported by the specification. SSI Techs., LLC v. Dongguan Zhengyang Elec. Mech. Ltd., Case Nos. 21-2345, 22-1039 (Fed. Cir. Feb. 13, 2023) (Reyna, Bryson, Cunningham, JJ.)

SSI owns two patents directed to sensors for determining the characteristics of fluid in a container such as a fuel tank. One patent, referred to as the transducer patent, describes an exemplary sensor system containing a “level” transducer and a “quality” transducer. The two transducers use ultrasonic sound waves and time of flight to determine both a level of fluid in a given tank and a quality (i.e., concentration of diesel exhaust fluid). The other patent, referred to as the filter patent, describes a similar system but attempts to address the problem of erratic measurement results that may occur because of air bubbles embedded in the fluid. This patent claims a “filter” covering the sensing area that substantially prohibits gas bubbles from entering the sensing area.

Dongguan Zhengyang Electronic Mechanical (DZEM) produces systems that determine the quality and volume of diesel exhaust fluid that are used in emission-reduction systems for diesel truck engines. SSI accused DZEM of infringing both patents. In the district court action, DZEM brought a motion for summary judgment of noninfringement based on the court’s construction of certain terms that appear in the asserted claims. With reference to the transducer patent, the claims recite the need to “determine whether a contaminant exists in the fluid based on . . . a dilution of the fluid [] detected while the measured volume of the fluid decreases.” The district court determined that this claim element required that the contaminant determination actually consider the measured volume of the fluid. The district court predicated its determination on the prosecution history, having found that this term was amended to include the disputed term and that the applicant’s intention was to incorporate the specific error-detection capability recited in the specification. The parties had previously agreed that the DZEM products did not base the contamination determination on any consideration of the measured volume. As a result, the district court granted DZEM’s motion for summary judgment of noninfringement on the transducer patent.

Regarding the filter patent, the district court adopted DZEM’s construction of the term “filter,” which was “a porous structure defining openings, and configured to remove impurities larger than said openings from a liquid or gas passing through the structure.” DZEM’s accused sensors includes a rubber cover with four apertures. The district court found that the rubber cover was not “porous” because the apertures were “relatively large” when compared with the disclosed embodiments in the specification. As a result, the court granted DZEM’s motion for summary judgment of noninfringement on the filter patent. SSI appealed.

SSI challenged both constructions. Regarding the transducer patent, SSI argued that [...]

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Things May Be Bigger in Texas, but Not Necessarily More Convenient

The US Court of Appeals for the Federal Circuit granted a mandamus petition after analyzing the Fifth Circuit’s public and private interest factors for transfer motions and ordered the US District Court for the Western District of Texas to transfer a case to the petitioner’s venue. In re Google LLC, Case No. 23-101 (Fed. Cir. Feb. 1, 2023) (Lourie, Taranto, Stark, JJ.).

Jawbone Innovations, LLC, had an eventful 2021:

  • February: Incorporated in Texas
  • May: Obtained ownership of nine patents (all directed to technologies behind the eponymous product line that liquidated in July 2017)
  • August: Rented office space in Waco, Texas
  • September: Asserted the nine patents it just acquired against Google in the Western District of Texas–Waco Division.

Google moved to transfer the dispute to the US District Court for the Northern District of California. That district was where (1) the accused products (earbuds, smartphones, speakers, displays and software) were researched, designed and developed; (2) the asserted technology was developed, and the asserted patents were prosecuted; and (3) the witnesses and sources of proof were primarily located. In contrast, no witnesses or sources of proof were located in the Western District of Texas. Moreover, Jawbone Innovations had no personnel in Waco nor activities related to the accused technology in the whole of Texas.

Judge Albright nevertheless denied Google’s transfer motion, weighing the Fifth Circuit’s four public interest factors and four private interest factors and finding that the transferee venue failed to meet the Fifth Circuit’s “clearly more convenient” standard. With the district court finding half of the eight factors not favoring either the transferee or the transferor, its holding boiled down to a ruling that considerations of “court congestion” and “judicial economy” (found to favor the transferor) outweighed considerations of “unwilling witness compulsion” and the “cost of attendance for willing witnesses” (found to favor the transferee).

Google petitioned the Federal Circuit for a writ of mandamus. The Court, applying the Fifth Circuit’s eight factor test, identified clear error in the district court’s analysis of five of the factors.

First: Addressing the “cost of attendance for willing witnesses” factor, the Federal Circuit found error in the district court’s conclusion that this factor only slightly favored transfer. Rather, the Court explained that this factor “weigh[ed] heavily in favor of transfer” because the transferee venue was clearly more convenient for potential witnesses, especially Google employees with technical, marketing and financial knowledge of the accused products. The error was localized to how the district court considered a Google declaration identifying at least 11 potential employee witnesses (all of whom were located in the transferee venue) and Jawbone Innovations’ assertions that the declaration omitted three potentially relevant Texas-based employees. The Court noted that while this 11 to three imbalance alone was sufficient to settle this factor, the district court’s error went further, finding Google’s declaration unreliable and less worthy of consideration because of the alleged omissions. The Federal Circuit determined this was error on error because the district court improperly ignored that the depositions [...]

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PTO Introduces Intellectual Property Identifier Tool

On January 18, 2023, the US Patent & Trademark Office announced the launch of its new Intellectual Property (IP) Identifier tool. This tool is designed for those who are less familiar with IP and assists users in determining whether they have IP and identifies what IP protections are available to support their business, invention or brand. The tool also briefly explains patents, trademarks, copyrights and trade secrets.

The IP Identifier tool comprises two modules: The Basic IP Identifier and the Advanced IP Identifier. The Basic IP Identifier module consists of six questions that allow users to quickly identify the type of IP they should protect. The Advanced IP Identifier module explains the specific types of IP and includes links to additional resources, including how to file an application for protection. A third module, Managing Your IP Assets, is currently under development.




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