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Patent Validity Prior Art Patent Litigation

Sheppard Mullin Richter & Hampton LLP

PTAB Again Upholds the Heavily Litigated Neo Wireless Patent: What the Latest Decisions Mean for Automakers

In a setback for automakers, the Patent Trial and Appeal Board (PTAB) has once again upheld the validity of Neo Wireless’s U.S. Patent No. 10,447,450, rejecting challenges brought by several major automakers. The most recent...more

BakerHostetler

Federal Circuit Confirms that Enablement of an Anticipatory Prior Art Reference Is Distinct from Enablement Under Section 112

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In Agilent Techs., Inc. v. Synthego Corp., the Federal Circuit addressed the difference between the enablement standard for an anticipatory prior art reference (under 35 U.S.C. § 102) and that for an applicant/patentee’s own...more

McCarter & English, LLP

Navigating the Landscape of Patent Challenges at the USPTO

Challengers striving to beat higher-ranked opponents at the US Open tennis tournament happening now in New York are not the only challengers facing tricky new situations. Parties wishing to challenge the validity of US...more

Sterne, Kessler, Goldstein & Fox P.L.L.C.

Reexamination and Reissue for Plant Patents: An Underused Avenue for Patent Owner’s to Strengthen Cultivar Protection

As plant innovation moves into a new era—driven by climate adaptation, consumer preferences, and advanced breeding techniques—most attention on plant patents focuses on securing the initial grant. Yet, in rare instances,...more

McCarter & English, LLP

New Patent Office Guidance Raises Bar for IPR Petitioners

The Patent Office recently announced that it will begin enforcing a rule that requires that inter partes review (IPR) petitions “specify where each element of the claim is found in the prior art patents or printed...more

MoFo Life Sciences

Is Your Claim Open or Closed? Claim Construction Takes on a New Meaning in Eye Therapies, LLC v. Slayback Pharma, LLC

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On June 30, 2025, the Federal Circuit issued a precedential decision in Eye Therapies, LLC v. Slayback Pharma, LLC, reversing the Patent Trial and Appeal Board’s (PTAB’s) claim construction of the phrase “consisting...more

Baker Botts L.L.P.

Discretionary Denials at the PTAB: Strategic Insights for Petitioners and Patent Owners in a Shifting Landscape

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A set of recently issued memoranda by United States Patent and Trademark Office (“USPTO”) officials has re-energized the debate around discretionary denials in post-grant trials at the Patent Trial and Appeal Board (“PTAB”)....more

Volpe Koenig

“Settled Expectations” as the New Gatekeeper for PTAB Discretionary Denials: Why Late-Stage IPRs Are Getting Harder to File

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When Acting USPTO Director Coke Morgan Stewart denied institution in Dabico v. AXA Power IPR2025-00408  Paper 21, much of the commentary focused on the result....more

Venable LLP

Spotlight On: Lantus® / Lantus® SoloSTAR® (insulin glargine recombinant) / Basaglar® (insulin glargine) / Semglee® (insulin...

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Insulin Glargine Challenged Claim Types in IPR and Litigation: Claims include those challenged in litigations and IPRs. Claims are counted in each litigation and IPR, so claims from the same patent challenged in multiple...more

Jones Day

Federal Circuit: Plans for Future Activity Created a Substantial Risk of Future Infringement

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Restem filed a petition for inter partes review of U.S. Patent No. 9,803,176, directed to stem cells obtained from umbilical cord tissue and isolated through a two-step process to create a specific cell marker expression...more

A&O Shearman

The UPC’s interpretation of inventive step: does it follow the problem-solution approach?

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UPC case law on the assessment of inventive step is still evolving. Most local division (LD) decisions have indicated a slightly diverging practice from the EPO’s problem-solution approach. However, more recently, others have...more

A&O Shearman

Federal Circuit Rejects PTAB’s Implicit And Incorrect Claim Construction Of “Between 1 And 10”

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On May 23, 2025, the United States Court of Appeals for the Federal Circuit (“CAFC”) issued a precedential opinion reversing a final written decision from the U.S. Patent Trial and Appeal Board (“PTAB”) finding the challenged...more

Jones Day

Federal Circuit: Petitioner Estoppel Does Not Apply to Product Prior At Grounds

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In IOENGINE, LLC v. Ingenico Inc. (Fed. Cir. 2025), the Federal Circuit narrowed the scope of IPR estoppel under 35 U.S.C. § 315(e)(2), which precludes an IPR petitioner from asserting in court that a patent claim “is invalid...more

Sheppard Mullin Richter & Hampton LLP

A Line in the Sand: Federal Circuit Bounds IPR Estoppel in Ingenico v. IOENGINE

In a significant development for patent litigants, the Federal Circuit in Ingenico Inc. v. IOENGINE, LLC, affirmed an important limitation on the scope of IPR estoppel under 35 U.S.C. § 315(e)(2). Specifically, the court held...more

Venable LLP

Spotlight On: Actemra® (tocilizumab) / Tofidence™ (tocilizumab-bavi) / Tyenne® (tocilizumab-aazg) / Avtozma® (tocilizumab-anoh) -...

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Tocilizumab Challenged Claim Types in IPRs: Claims are counted in each IPR, so claims from the same patent challenged in multiple IPRs are counted more than once. Within each IPR, claims are counted only once, whether they...more

BakerHostetler

[Podcast] Make It Plain: Clarity Regarding Obviousness-Type Double Patenting

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In a year defined by landmark decisions, impactful announcements and new standards, clarity in the patent world comes as a welcome relief. It arrived via a federal circuit court decision in August 2024 that settled certain...more

Sterne, Kessler, Goldstein & Fox P.L.L.C.

Ingenico: Federal Circuit Narrows the Scope of IPR Estoppel Under § 315(e)(2)

On May 7, 2025, the Federal Circuit issued a precedential decision in Ingenico Inc. v. IOENGINE, LLC that narrows the scope of inter partes review (IPR) estoppel under 35 U.S.C. § 315(e)(2), resolving a longstanding district...more

Venable LLP

Federal Circuit Interprets IPR Estoppel Under 35 U.S.C. § 315(e)(2) to Permit at Trial Invalidity Theories Based on Prior Use or...

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On May 7, 2025, the Federal Circuit issued a decision in Ingenico, Inc. v. IOENGINE, LLC, effectively holding that 35 U.S.C. § 315(e)(2) estoppel cannot preclude an IPR petitioner from advancing in a district court trial an...more

Knobbe Martens

Federal Circuit Review | April 2025

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In Ams-Osram USA Inc. v. Renesas Electronics America, Inc., Appeal No. 22-2185, the Federal Circuit held that under Texas law, a trade secret becomes publicly accessible on the earliest date it could be reverse engineered...more

Fish & Richardson

Can Clinical Trials Negate Patentability for Pharma Inventions?

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The answer to this inquiry is “yes” — but maybe “no.” Will confidentiality agreements shield any prior art concerns? Once again, maybe “yes” — but maybe “no.” Indeed, do clinical trials constitute an experimental use that...more

Proskauer - The Patent Playbook

Federal Circuit Affirms Stem Cell Product-by-Process Claims: Lessons in Claim Construction and Inherency from Restem LLV v. Jadi...

The Federal Circuit issued a precedential opinion on March 4, 2025, that serves as valuable guidance for product-by-process claims, particularly in the context of inherency in claim construction. In Restem, LLC v. Jadi Cell,...more

Venable LLP

Spotlight On: Actemra® (tocilizumab) / Tofidence™ (tocilizumab-bavi) / Tyenne® (tocilizumab-aazg) / Avtozma® (tocilizumab-anoh) -...

Venable LLP on

Tocilizumab Challenged Claim Types in IPRs: Claims are counted in each IPR, so claims from the same patent challenged in multiple IPRs are counted more than once. Within each IPR, claims are counted only once, whether they...more

Venable LLP

Spotlight On: Herceptin® (trastuzumab) / Ogivri® (trastuzumab-dkst) / Herzuma® (trastuzumab-pkrb) / Ontruzant® (trastuzumab-dttb)...

Venable LLP on

Trastuzumab Challenged Claim Types in IPR and Litigation: Claims include those challenged in litigations and IPRs. Claims are counted in each litigation and IPR, so claims from the same patent challenged in multiple...more

BakerHostetler

[Podcast] The Changing Landscape: Admissibility of Experts in Patent Cases

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Experts play a crucial role in patent cases. Experts opine on claim construction, infringement, invalidity and the proper amount of damages. And the exclusion of an expert witness can significantly impact the outcome of a...more

Mintz - Intellectual Property Viewpoints

The UPC and EPO Divide: Understanding Conflicting Revocation Proceeding Outcomes

With nearly 800 cases adjudicated or pending thus far at the Unified Patent Court (UPC), a possible procedural gap has appeared in the European patent system: no clear legal mechanism currently exists to resolve conflicting...more

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