News & Analysis as of

Claim Construction

Knobbe Martens

Cancellation of a Closely Related Claim During Prosecution Can Trigger Prosecution History Estoppel

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COLIBRI HEART VALVE LLC v. MEDTRONIC COREVALVE, LLC - Before Taranto, Hughes, and Stoll. Appeal from the United States District Court for the Central District of California. The Federal Circuit reversed a $106 million...more

Knobbe Martens

Not So Cozy: Prosecution History Disclaimer for Design Patents

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TOP BRAND LLC v. COZY COMFORT CO. LLC - Before Dyk, Reyna, and Stark. Appeal from the United States District Court for the District of Arizona. Summary: Arguments presented during prosecution of a design-patent application...more

Fenwick & West LLP

Federal Circuit Confirms: Prosecution History Disclaimer Applies to Design Patents Too

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Many industries rely on design patents to protect the look and feel of their products—especially when aesthetics drive customer interest, brand identity, or market differentiation. In Top Brand LLC v. Cozy Comfort Company...more

Lathrop GPM

Federal Circuit Says Claim Cancellation Can Create Prosecution History Estoppel

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In a July 18 precedential decision in Colibri Heart Valve LLC v. Medtronic CoreValve LLC, the U.S. Court of Appeals for the Federal Circuit overturned a $106 million jury verdict against Medtronic for infringement of a patent...more

Alston & Bird

Patent Case Summaries | Week Ending July 18, 2025

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Shockwave Medical, Inc. v. Cardiovascular Systems, Inc., et al., Nos. 2023-1864, -1940 (Fed. Cir. (PTAB) July 14, 2025). Opinion by Dyk, joined by Lourie and Cunningham....more

McDermott Will & Emery

Don’t get too comfy: Prosecution disclaimer also applies to design patents

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Concluding that the principles of prosecution history disclaimer apply to design patents, the US Court of Appeals for the Federal Circuit reversed a district court’s denial of judgment as a matter of law and entry of a jury...more

Dickinson Wright

2025 Patent Filing Costs Rise: USPTO Fee Update and Response Strategies

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In January 2025, the United States Patent and Trademark Office (USPTO) implemented a broad set of fee increases and structural adjustments intended to address rising operational costs and encourage more efficient patent...more

A&O Shearman

UPC Court of Appeal clarifies approach to claim construction

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Insulet v EOFlow UPC_CoA_768/2024 (Ord_69078/2024) The Unified Patent Court (UPC) Court of Appeal has issued a significant decision that provides important guidance on the interpretation of patent claims in UPC...more

A&O Shearman

Federal Circuit Invalidates Patent For Angioplasty Catheter Based On Applicant Admitted Prior Art

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The Federal Circuit recently issued a precedential decision in Shockwave Med., Inc. v. Cardiovascular Sys., Inc. (CSI), affirming-in-part and reversing-in-part the Patent Trial and Appeal Board’s (PTAB) decision, and...more

Sheppard Mullin Richter & Hampton LLP

Lexicography: Clear And Unequivocal

This Federal Circuit opinion analyzes lexicography in the context of claim construction. Alnylam Pharmaceuticals owns U.S. Patent Nos. 11,246,933 (parent) and 11,382,979 (child). These patents relate to biodegradable...more

Alston & Bird

Patent Case Summaries | Week Ending July 11, 2025

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Egenera, Inc. v. Cisco Systems, Inc., No. 2023-1428 (Fed. Cir. (D. Mass.) July 7, 2025). Opinion by Stark, joined by Prost and Taranto. Egenera owns a patent related to improved systems and methods for deploying and...more

McDonnell Boehnen Hulbert & Berghoff LLP

Shockwave Medical, Inc. v. Cardiovascular Systems, Inc. (Fed. Cir. 2025)

Received wisdom is that inter partes review proceedings are limited to prior art as defined by patents and printed publications.  But in recently decided Shockwave Medical, Inc. v. Cardiovascular Systems, Inc., another prior...more

McDermott Will & Emery

Appeal is too late to raise percolating claim construction dispute

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The US Court of Appeals for the Federal Circuit affirmed a district court’s finding of noninfringement, concluding that the patent owner had improperly raised a claim construction issue for the first time on appeal – an...more

Smart & Biggar

Crisp boundaries: Federal Court defines the scope of protection for French fry manufacturing process patent

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In McCain Foods Limited v J.R. Simplot Company (2025 FC 1078), the Federal Court of Canada found that the Defendant’s use of pulsed electric fields (PEF) to pretreat potatoes before further processing into French fries did...more

Carlton Fields

Court Finds MSN Does Not Infringe Novartis’s Patent and Clears the Way for Generic Entresto

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In In re Entresto (Sacubitril/Valsartan) Patent Litigation, Judge Richard G. Andrews of the U.S. District Court for the District of Delaware granted MSN Pharmaceuticals Inc. a victory on noninfringement of U.S. Patent No....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

Cooley LLP

Janssen v. Teva: Federal Circuit Upholds Claims to Pharmaceutical Dosing Regimen, Clarifies Presumption of Obviousness for...

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On July 8, the US Court of Appeals for the Federal Circuit issued a precedential opinion in Janssen Pharmaceuticals, Inc. et al. v. Teva Pharmaceuticals USA, Inc. affirming the district court’s finding that patent claims to a...more

A&O Shearman

The Federal Circuit Rejects PTAB’s Use Of Traditional Construction Of “Consisting Essentially Of”

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On June 30, 2025, the U.S. Court of Appeals for the Federal Circuit vacated a decision by the U.S. Patent Trial and Appeal Board (the “Board”) and remanded the case for further proceedings using a narrower construction of the...more

Schwabe, Williamson & Wyatt PC

Latest Federal Court Cases: Janssen Pharmaceuticals, Inc. v. Teva Pharmaceuticals USA, Inc.

Janssen Pharmaceuticals, Inc. v. Teva Pharmaceuticals USA, Inc., Appeal Nos. 2025-1228, -1252 (Fed. Cir. July 8, 2025) Our Case of the Week focuses on obviousness. More particularly, the decision included a lengthy...more

Knobbe Martens

Federal Circuit Review | June 2025

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In Dolby Laboratories Licensing Corporation V. Unified Patents, LLC, Appeal No. 23-2110, the Federal Circuit held that a patent owner lacks Article III standing to appeal an inter partes review decision on patentability when...more

Alston & Bird

Patent Case Summaries | Week Ending July 4, 2025

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Eye Therapies, LLC v. Slayback Pharma, LLC, No. 2023-2173 (Fed. Cir. (PTAB) June 30, 2025). Opinion by Scarsi, joined by Taranto and Stoll. Eye Therapies owns a patent that claims a method for reducing eye redness...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

McDermott Will & Emery

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

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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

Knobbe Martens

An Eye Toward Prosecution History

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EYE THERAPIES, LLC v. SLAYBACK PHARMA LLC - Before Taranto, Stoll and Scarsi (sitting by designation). The patent’s prosecution history required a restrictive interpretation of the term “consisting essentially of.”...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

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