News & Analysis as of

Statutory Interpretation Claim Construction Inter Partes Review (IPR) Proceeding

McDermott Will & Emery

Prosecution history primacy: “Consisting essentially of” means what applicant said it meant

McDermott Will & Emery on

In a decision that underscores the primacy of prosecution history to determine claim scope, the US Court of Appeals for the Federal Circuit reversed the Patent Trial & Appeal Board’s interpretation of the transitional phrase...more

McDonnell Boehnen Hulbert & Berghoff LLP

Eye Therapies LLC v. Slayback Pharma, LLC (Fed. Cir. 2025)

Patent law in many respects has its own language and idiosyncratic expressions, and one such respect involves so-called "transitional" words or phrases (discussed in greater depth in the Manual of Patent Examination Procedure...more

McDonnell Boehnen Hulbert & Berghoff LLP

Edwards Lifesciences Corp. v. Cardiovalve Ltd. (Fed. Cir. 2025)

One of the assumptions, or promises, or hopes, attendant on the inauguration of post-grant review proceedings (particularly inter partes reviews) under the Leahy-Smith America Invents Act was that, as in European Opposition...more

A&O Shearman

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

A&O Shearman on

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

Sheppard Mullin Richter & Hampton LLP

Undetectable Amount of Magnification IS Magnification

This Federal Circuit Opinion analyzes invalidity based on anticipation and obviousness, more specifically based on implicit claim construction of the claim limitation and inherent disclosures....more

Sheppard Mullin Richter & Hampton LLP

Don’t Get Lazy, Timely Complete Your Arguments

This Federal Circuit Opinion analyzes statutory estoppel under 35 U.S.C. § 315(e)(1) and examines offensive and defensive arguments related to § 103 obviousness.  Gesture Technology Partners, LLC is the owner of U.S....more

Rothwell, Figg, Ernst & Manbeck, P.C.

Understanding the PTAB’s Recent Informative Decision: Cambridge Mobile Telematics, Inc. v. Sfara, Inc.

The Patent Trial and Appeal Board (PTAB) recently designated its decision in Cambridge v. Sfara (IPR2024-00952) as an informative decision.[1] This designation addresses an important issue in inter partes review (IPR)...more

McDonnell Boehnen Hulbert & Berghoff LLP

Recor Medical, Inc. v. Medtronic Ireland Mfg. (Fed. Cir. 2025)

The inter partes review provisions of the Leahy-Smith America Invents Act have been criticized for the propensity of the Patent Trial and Appeal Board (PTAB) to find invalid all or at least some of the challenged claims,...more

Knobbe Martens

PTAB Grants Motion to Amend After Aqua Products

Knobbe Martens on

In Polygroup Limited v. Willis Electric Co., Ltd., IPR2016-01613, Paper 118 (Feb. 26, 2018), the PTAB granted the patent owner Willis Electric’s motion to amend a claim directed to lighted artificial trees. This decision...more

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