Patent Misuse is Not a Stand­-Alone Cause of Action

On February 28, 2025, the USPTO announced that it was rescinding former Director Vidal’s 2022 memorandum on discretionary denials by the Patent Trial and Appeal Board. The 2022 memorandum effectively narrowed the application of discretionary denials in cases with parallel district court litigation by specifying instances where discretionary denial could not be issued. With the withdrawal of the memorandum, individual PTAB panels will regain flexibility in weighing discretionary denials. While the long-term effect of that increased flexibility is not yet known, the immediate effect is likely to be a shift towards the discretionary analysis applied by PTAB panels before the issuance of the memorandum.

A District of Delaware judge recently granted a defendant’s motion to include a patent prosecution bar in its proposed protective order after determining that litigation counsel’s ability to practice before the Patent Office—without ever having represented the plaintiffs at the Patent Office in the past—weighed heavily in favor of the bar.

The Federal Circuit recently reversed a district court decision that found a patent that did not describe after-arising technology failed to satisfy the written description requirement. In so doing, the Federal Circuit explained that written description and enablement are evaluated based on the subject matter that is claimed, not the products that practice those claims. As a result, the patentee was not required to describe unclaimed, later-discovered features of the accused products despite the broad language in the claims that undisputedly covered the products.

The District of Delaware recently rejected a patentee’s argument that non-production of an opinion letter from counsel, combined with knowledge of the patent, warranted a finding that defendant induced infringement.

The District of Delaware recently denied a motion to dismiss a patent infringement complaint involving gene editing technology that sought relief under the Safe Harbor Provision of the Hatch-Waxman Act. Specifically, the court found the patentee’s complaint sufficiently alleged at least some uses of the claimed technology that, when taken as true, were not solely uses of a “patented invention” that were “reasonably related” to an FDA submission.

The District of Arizona recently held that a plaintiff’s failure to mark patented products during the time period that marking was required barred it from recovering all pre-notice damages, including for a period of time when there was no obligation to mark.

The Unified Patent Court (UPC) aims to provide expeditious decisions for its litigants. That means that there is a higher bar for obtaining extensions of time. As exemplified in BMW v. ITCiCo, the UPC’s reluctance to grant extensions can have serious consequences, including revocation of the patent.

The Patent Trial and Appeal Board granted institution of inter partes review of a patent directed to delivery of targeted television advertisements. The board rejected patent owner’s argument that a lack of particularity as to the asserted grounds justified denial under 35 U.S.C. § 312(a), holding that “simply including a significant amount of testimony and a number of supporting references is not, by itself, a reason to find that the particularity requirement is not met.”