Imagine That IP Law Blog

Determining whether a claimed invention is obvious under 35 U.S.C. § 103 often depends on whether the prior art provides a clear motivation for modifying existing knowledge. Central to this analysis is the concept of a “result-effective variable”—a parameter recognized in the prior art as influencing a particular property or outcome. If a variable is deemed result-effective, it suggests that a person of ordinary skill in the art (POSITA) would have been motivated to adjust or optimize that parameter in pursuit of improved results. However, if the prior art does not establish ... Read More ›

When drafting method claims, a strategic patent practitioner must keep in mind whether any portion of the claim language will be interpreted by a Patent Examiner, PTAB tribunal, or Federal Circuit as conditional. Initial considerations may include whether conditional claim language will even serve the objective of protecting an invention and what types of claim terms may explicitly or implicitly invoke a conditional limitation. If claims include a conditional limitation, how might that affect an Examiner’s prior art search, and what would be required for infringement? A ... Read More ›

In an Inter Partes Review (IPR), one of the arguments that a patent owner can raise against petitioner’s argument for unpatentability based on obviousness is that the asserted prior art is not analogous art.  According to the Federal Circuit, “[t]wo separate tests define the scope of analogous prior art: (1) whether the art is from the same field of endeavor, regardless of the problem addressed, and, (2) if the reference is not within the field of the inventor’s endeavor, whether the reference still is reasonably pertinent to the particular problem with which the inventor is ... Read More ›

When a party wishes to challenge the validity of another's patent, the party may chose to file a Petition Inter Partes Review (IPR) with the United States Patent and Trademark Office’s (USPTO) Patent Trial and Appeal Board (PTAB). If the Petition fails to provide sufficient evidence to  to demonstrate a reasonable likelihood of success on the merits, the PTAB will deny institution of the IPR.

For example, the Petition is required to include “[a] full statement of the reasons for relief requested, including a detailed explanation of the significance of the evidence including ... Read More ›

“Unlike district court litigation—where parties have greater freedom to revise and develop their arguments over time and in response to newly discovered material—the expedited nature of IPRs bring with it an obligation for petitioners to make their case in their petition to institute.” Bio-Sys., Inc. v. Illumina Cambridge Ltd., 821 F.3d 1359, 1369 (Fed. Cir. 2016). Accordingly, the Patent Trial and Appeals Board (PTAB) rules state the Petitioner must “seek leave to file a reply” to a Patent Owner’s Preliminary Response (POPR) and “ [a]ny such request must make a ... Read More ›

In an Inter Partes Review (IPR), the burden of proof and persuasion lies with the petitioner to demonstrate "unpatentability by a preponderance of the evidence" under 35 U.S.C. § 316(e). “[T]hat burden never shifts to the patentee.” Dynamic Drinkware, LLC v. Nat'l Graphics, Inc., 800 F.3d 1375, 1378-79 (Fed. Cir. 2015). Accordingly, to invalidate a claim in an IPR, the petitioner must establish by a preponderance of the evidence, that a claim in a patent is unpatentable.

To prove that a claim is unpatentable for violating “obviousness” requirements under 35 U.S.C §103, a ... Read More ›

Applicant-admitted prior art (“AAPA”) refers to a situation in patent applications where the person or entity applying for a patent acknowledges the existence of prior art relevant to their invention. When an applicant admits prior art, they are essentially acknowledging that the invention they are seeking to patent is not entirely new or novel. By admitting the existence of prior art, the Applicant is disclosing that similar or related technologies or inventions already exist, which could potentially impact the patentability of their own invention.

In the United States ... Read More ›

In Sanofi-Aventis Deutschland GMBH v. Mylan Pharmaceuticals Inc., No. 2021-1981, 2023 U.S. App. LEXIS 11311 (Fed. Cir. 2023), the Federal Circuit reversed a decision by the Patent Trial and Appeal Board (“PTAB”) that found all challenged claims of U.S. Patent No. RE47,614 (“the ‘614 patent”) unpatentable in Inter Partes Review (IPR) IPR2019-01657. The Petitioner (Mylan) argued that the combination of three prior art references rendered the claims obvious. In attempting to sustain its burden of establishing obviousness, Mylan appears to have attempted to apply the ... Read More ›

In last week’s precedential decision in HIP, Inc. v. Hormel Foods Corp, the Federal Circuit reversed a decision by the District Court of Delaware holding that an inventor, David Howard, should be added as a joint inventor on U.S. Patent 9,980,498 (“’498 Patent”). The Federal Circuit reasoned that the inventor failed to satisfy the three-part test articulated in Pannu v. Iolab Corp., 155 F.3d 1344,1351, because his contribution to the claims of the ‘498 Patent was “insignificant in quality.” HIP, Inc. v. Hormel Foods Corp., No. 2022-1696, 2023 U.S. App. LEXIS ... Read More ›

Last week’s non-precedential decision by the Federal Circuit Court of Appeals in Cioffi v. Google LLC, No. 2018-1049, 2023 U.S. App. LEXIS 9142 (Fed. Cir. Apr. 18, 2023) serves as a warning for both holders of reissue patents and patent owners considering filing a reissue. The Court held that the “original patent” requirement is the standard for support in the specification for claims in a reissued patent under 35 U.S.C. §251. In order for a claim to be supported under the original patent requirement, there must be an express disclosure of the exact embodiment claimed on reissue ... Read More ›

Earlier this week, the Federal Circuit issued an opinion in Sequoia Technology LLC v. Dell Inc. et al. that underscores the importance of intrinsic evidence when construing claim language in a District Court litigation. Of particular importance are the Court’s statements regarding the patent specification’s provision of an “express purpose of the invention” and a “preferred embodiment,” as well as the Court’s reliance on statements made by the Patent Owner in its pre-institution filings and on a document cited in an Information Disclosure Statement (IDS) during ... Read More ›

In Salazar v. AT&T Mobility LLC, the Federal Circuit found that a claim reciting "a microprocesser" that performed several functions was not infringed by a system where the claimed functions were distributed among multiple microprocessors. The Court reasoned that “for a dog owner to have ’a dog that rolls over and fetches sticks,’ it does not suffice that he have two dogs, each able to perform just one of the tasks.”  Salazar v. AT&T Mobility LLC, Nos. 2021-2320, 2021-2376, 2023 U.S. App. LEXIS 8071, at *15 (Fed. Cir. Apr. 5, 2023). 

The claim in Salazar recited:

1. A communications ...

In Arbutus Biopharma Corporation, FKA Protiva Biotherapeutics, Inc. V. Modernatx, Inc., FKA Moderna Therapeutics, Inc. (Fed. Cir. 2020-1183, April 11, 2023), Moderna challenged claims 1–22 of Arbutus’ U.S. Patent No. 9,404,127 (the ’127 Patent) by Inter Partes Review. The Board found all challenged claims anticipated by U.S. Patent 8,058,069 (Yaworski). The Board’s determination of anticipation relied on inherency and the disclosure of documents incorporated by reference by both Yaworski and the ’127 Patent.

The ’127 Patent was directed to compositions of ... Read More ›

The Federal Circuit’s 2004 decision in Superguide v. DirecTV can be influential in determining the fate of a patent’s validity based upon a simple test: does your claim recite “OR” or does your claim recite “AND” when listing a series of elements?  SuperGuide Corp. v. DirecTV Enters., Inc., 358 F.3d 870 (Fed. Cir. 2004).  What seems to be a triviality becomes critical under SuperGuide.  At issue is how to interpret the plain meaning of the phrase “at least one of” when it precedes a series of elements, such as in the hypothetical claim language, “at least one of A, B, and ... Read More ›

Regents of the University of Minnesota v. Gilead Sciences., Inc., CAFC 2021-2168

Gilead Sciences filed a petition for Inter Partes Review (IPR) against the University of Minnesota’s U.S. patent No. 8,815,830 (the ’830 Patent). Gilead challenged claims 1-9, 11-21, and 23-28 of the ’830 Patent, and alleged that they are anticipated by U.S. pre-grant publication No. 2010/0016251 (Sofia). The Patent Trial and Appeal Board (PTAB) held that the Challenged Claims were anticipated, and the University of Minnesota appealed to the Court of Appeals for the Federal Circuit.

The ... Read More ›

Director Vidal is reshaping the rules for discretionary denials of Inter Partes Review (“IPRs”) at the Patent Trials and Appeals Board (“PTAB”). The Director’s most recent decision in AviaGames v. Skillz Platform, Inc., IPR2022-00530, comes on the heels of her decision in CommScope Tech. v. Dali Wireless, Inc., IPR2022-01242.  In AviaGames, the Director articulates a new discretionary denial standard for IPRs where the patent has been ruled invalid under 35 U.S.C. § 101 in the parallel District Court litigation. (For a detailed discussion of CommScope see our previous ... Read More ›

The Director of the USPTO, Kathi Vidal, issued a decision this week raising the likelihood that the Patent Trials and Appeals Board (PTAB) will exercise its discretion to deny the institution of Inter Partes Review (IPR) challenges. Last June, Vidal issued guidance on the discretionary denial standard, which was widely interpreted to be the death knell for discretionary denials. The Director’s decision this week will undoubtedly change that view. It appears that the prospects for discretionary denial are alive and well at the PTAB.

In  COMMSCOPE TECHNOLOGIES LLC, v DALI ... Read More ›

One misconception among those who primarily litigate patent infringement actions before U.S. federal courts is that post-grant proceedings before the Patent Trial and Appeal Board (PTAB), including inter partes reviews (IPRs) and post grant reviews (PGRs), are similar to federal patent litigation. Although there are similarities between these types of proceedings, as IPR/PGR proceedings are also adversarial between the petitioner (i.e., the patent challenger) and the patent owner, there are important differences between the two. Besides the differences in legal ... Read More ›