petitions Archives

Unintentional delay: USPTO shortens threshold for additional information requirement

by Kelsey Wun | Jul 1, 2026 | Patents

On June 24, 2026, the United States Patent and Trademark Office (USPTO) revised its practice of requiring additional information for certain petitions based on unintentional delay and changed the conditions under which the corresponding higher petition fee applies. The new rule is effective August 13, 2026.

In March 2020, the USPTO clarified that additional information would generally be required for petitions based on unintentional delay in the following three circumstances:

A petition to revive an abandoned application filed more than two years after the application became abandoned.
A petition to accept a delayed maintenance fee payment filed more than two years after the patent expired for nonpayment.
A petition to accept a delayed priority or benefit claim filed more than two years after the priority or benefit claim was due.

The USPTO required petitioners to provide additional information when a petition was filed more than two years after the relevant deadline. The additional information was intended to establish the facts and circumstances surrounding the entire period of delay and demonstrate that the entire delay was “unintentional.” The USPTO reasoned that the two-year threshold would reduce uncertainty and unpredictability concerning patent rights.

Under the new rule, the USPTO has shortened the threshold for requiring additional information from two years to one year. The USPTO explained that the one-year threshold will further increase certainty and predictability concerning patent rights by requiring applicants and patentees to provide an adequate explanation establishing that the entire delay was unintentional. According to the USPTO, such an explanation “safeguards a patentee’s rights by establishing on the record that the delay was unintentional, and protects the public by prohibiting revival, reinstatement, entry of a benefit or priority claim, or excuse of delay” when a party cannot establish that the delay was unintentional. The USPTO also explained that the revised threshold will promote efficiency by encouraging applicants to monitor their patent files and promptly address errors.

The new rule extends this one-year threshold to petitions seeking to excuse an applicant’s failure to act within prescribed time limits under the Hague Agreement in connection with international design applications. The USPTO emphasized, however, that it retains discretion to require additional information whenever there is a question whether a delay was unintentional, regardless of the length of the delay.

Because the revised rule increases the evidentiary requirements and the cost of reviewing petitions filed after an extended delay, the USPTO also revised the threshold for when the higher petition fee applies. Under the new rule, the higher fee applies to petitions filed more than one year after the applicable deadline, rather than more than two years after the deadline. According to the USPTO, applying the higher fee at the one-year threshold will further encourage applicants to file petitions promptly, benefiting applicants by reducing delays in the examination process and promoting greater certainty and predictability regarding patent rights.

Practice note: Petitioners filing a petition to revive an abandoned application more than one year after the application became abandoned, a petition to [...]

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Fintiv Guidelines for Post-Grant Proceedings Involving Parallel District Court Litigation

by Sarah Mezini | Apr 3, 2025 | Patents

On March 24, 2025, the US Patent & Trademark Office (PTO) released new guidance that clarifies application of the Fintiv factors when reviewing validity challenges simultaneously asserted at the Patent Trial & Appeal Board and in district court or at the US International Trade Commission.

This guidance follows the PTO’s February 28, 2025, announcement reverting to its previous guidelines for discretionary denials of petitions for post-grant proceedings where district court litigation is ongoing. That announcement rescinded the PTO’s June 21, 2022, memorandum entitled “Interim Procedure for Discretionary Denials in AIA Post-Grant Proceedings with Parallel District Court Litigation,” which prevented the Board from rejecting validity challenges where there was “compelling evidence of unpatentability.”

Based on the new guidance, the Board is more likely to defer to the district court or the Commission if the Commission’s projected final determination date is earlier than the deadline for the Board’s final written decision. The PTO pointed out that a patent challenger’s stipulation not to raise the same invalidity arguments in other proceedings if the PTO institutes an inter partes review or post grant review is highly relevant but not dispositive.

This change in policy increases the likelihood that the Board will grant discretionary denials in situations involving parallel district court or Commission proceedings.

PTO Reverts to Prior Post-Grant Guidelines for Cases Involving Parallel District Court Litigation

by Sarah Mezini | Mar 13, 2025 | Patents

On February 28, 2025, the acting director of the US Patent & Trademark Office (PTO) announced that the agency will revert to previous guidelines for discretionary denials of petitions for post-grant proceedings where there is ongoing district court litigation.

This announcement rescinds the PTO’s June 21, 2022, memorandum entitled “Interim Procedure for Discretionary Denials in AIA Post-Grant Proceedings with Parallel District Court Litigation.” The memorandum stated that the Patent Trial & Appeal Board “will not deny institution of an IPR or PGR under Fintiv (i) when a petition presents compelling evidence of unpatentability; (ii) when a request for denial under Fintiv is based on a parallel ITC proceeding; or (iii) where a petitioner stipulates not to pursue in a parallel district court proceeding the same grounds as in the petition or any grounds that could have reasonably been raised in the petition.” The memorandum effectively limited the discretion granted in Fintiv, which outlined six factors for the Board to consider when making decisions on post-grant proceedings involving parallel district court litigation.

Now that the 2022 memorandum has been rescinded, parties to post-grant proceedings should refer to Board precedent, including Fintiv and Sotera Wireless v. Masimo, for guidance when there are parallel district court proceedings. In accordance with prior guidelines, the PTO’s objective is to achieve greater consistency in its decision-making processes, especially in situations where patent validity is contested both in the courts and before the Board. The PTO emphasized that any portions of future Board decisions that rely on the 2022 memorandum will not be binding or persuasive.

Practice Note: Because of this action, the Board will now enjoy greater discretion when ruling on post-grant petitions, which may result in an increase of discretionary denials.