Browse 25 patent eligibility under 35 u s c 101 cases decided by Federal Circuit. AI-powered summaries, holdings, and legal analysis.
Federal Circuit: Method using non-nucleic acid probe not patentable
Cash v. Collins, decided by Federal Circuit on February 5, 2026, resulted in a defendant win outcome. The case concerns the patentability of a method for detecting and quantifying nucleic acids using ...
Federal Circuit Affirms Patent Invalidity for Abstract Idea in Medical Treatment
Hamill v. Collins, decided by Federal Circuit on February 4, 2026, resulted in a defendant win outcome. The case concerns the patentability of a method for treating a patient with a specific genetic m...
CAFC Affirms PTAB, Finds Software Patent Unpatentable
In Re US, decided by Federal Circuit on February 2, 2026, resulted in a defendant win outcome. The case concerns the patentability of software, specifically the "data processing" method claimed in the...
CAFC Affirms PTAB Decision on Software Patent Eligibility
In Re US, decided by Federal Circuit on February 2, 2026, resulted in a defendant win outcome. The case concerns the patentability of software, specifically whether a patent claim directed to a "metho...
Federal Circuit: Method of treatment claim for medical device is patent-eligible
Young v. Collins, decided by Federal Circuit on January 13, 2026, resulted in a defendant win outcome. The case concerns the patentability of a "method of treatment" claim for a medical device. The Fe...
Method of treatment patent rejected for claiming natural phenomenon
Ablan v. United States, decided by Federal Circuit on December 22, 2025, resulted in a defendant win outcome. The case concerns the patentability of a "method for treating a disease by administering a...
Federal Circuit Affirms PTAB's Patent Invalidation for Abstract Idea
Mutakaber v. Secretary of State, decided by Federal Circuit on December 18, 2025, resulted in a defendant win outcome. The case concerns the validity of a patent for a "method and apparatus for detect...
Work for Hire Doctrine: US Not Copyright Owner of Lesko's Work
Lesko v. United States, decided by Federal Circuit on December 12, 2025, resulted in a plaintiff win outcome. The case concerns the interpretation of the "control" prong of the "work for hire" doctrin...
Federal Circuit Affirms Patent Ineligibility of Genetic Diagnostic Method
Golden v. Collins, decided by Federal Circuit on December 12, 2025, resulted in a defendant win outcome. The case concerns the patentability of a diagnostic method for identifying a specific genetic m...
CAFC Affirms Patent Ineligibility for Abstract Virtual Image Generation
Blue Sky the Color of Imagination, LLC v. United States, decided by Federal Circuit on December 4, 2025, resulted in a defendant win outcome. The case concerns the patentability of "virtual" or "abstr...
CAFC Affirms PTAB's Rejection of ctDNA Patent Claims Under § 101
Wright v. Collins, decided by Federal Circuit on October 28, 2025, resulted in a defendant win outcome. The case concerns the patentability of a method for detecting and quantifying circulating tumor ...
Federal Circuit Affirms PTAB's Finding of Non-Patent-Eligible Claims
Causam Enterprises, Inc. v. Ecobee Technologies Ulc, decided by Federal Circuit on October 15, 2025, resulted in a defendant win outcome. The Federal Circuit affirmed the Patent Trial and Appeal Board...
CAFC Affirms PTAB's Rejection of Patent Claims as Abstract Idea
US Inventor, Inc. v. PTO, decided by Federal Circuit on October 3, 2025, resulted in a defendant win outcome. The case concerns whether the Patent Trial and Appeal Board (PTAB) correctly determined th...
CAFC Affirms PTAB's Rejection of Patent Claims as Abstract
Hyatt v. Stewart, decided by Federal Circuit on August 29, 2025, resulted in a defendant win outcome. The case concerns the patentability of a "method and apparatus for providing a user interface for ...
Federal Circuit Affirms PTAB Obviousness Finding in Semiconductor Patent Case
Fisher v. United States, decided by Federal Circuit on August 12, 2025, resulted in a defendant win outcome. The case concerns whether the Patent Trial and Appeal Board (PTAB) correctly applied the "o...
Federal Circuit Affirms Non-Infringement of Patent for Drug Formulation Treatment
Wright v. Collins, decided by Federal Circuit on August 1, 2025, resulted in a defendant win outcome. The case concerns the patentability of a method for treating a patient's condition using a specifi...
Federal Circuit Affirms Patent Infringement Finding and Denies New Trial
Jiaxing Super Lighting Electric Appliance, Co. v. Ch Lighting Technology Co., Ltd., decided by Federal Circuit on July 28, 2025, resulted in a defendant win outcome. The Federal Circuit affirmed the d...
Federal Circuit Affirms PTAB's Rejection of Patent for Abstract Idea
Beacon Point Associates LLC v. DVA, decided by Federal Circuit on June 5, 2025, resulted in a defendant win outcome. The case concerns whether a patent for a "method of treating a patient" was properl...
CAFC Affirms PTAB's § 101 Rejection of Mobile Device UI Patent Claims
Curtin v. United Trademark Holdings, Inc., decided by Federal Circuit on May 22, 2025, resulted in a defendant win outcome. The Federal Circuit affirmed the Patent Trial and Appeal Board's (PTAB) deci...
CAFC Affirms Patent Ineligibility of Method of Treatment Claim
Lessors of Abchakan Village v. Defense, decided by Federal Circuit on May 16, 2025, resulted in a defendant win outcome. The case concerns the patentability of a "method of treatment" claim directed t...
Federal Circuit Affirms PTAB's Denial of IPR Institution
In Re KOSTIC, decided by Federal Circuit on May 6, 2025, resulted in a defendant win outcome. The Federal Circuit affirmed the Patent Trial and Appeal Board's (PTAB) decision to deny institution of an...
CAFC Affirms PTAB, Finds Drug Dosage Method Unpatentable Under § 101
Amezquita v. Collins, decided by Federal Circuit on May 5, 2025, resulted in a defendant win outcome. The case concerns the patentability of a method for treating a patient's condition using a specifi...
CAFC Affirms PTAB's § 101 Rejection of Nucleic Acid Detection Method
Hatfield v. Collins, decided by Federal Circuit on May 2, 2025, resulted in a defendant win outcome. The case concerns the patentability of a method for detecting and quantifying nucleic acid sequence...
CAFC Affirms Patent Ineligibility for Method of Treatment Using Biomarker Correlation
Steele v. Collins, decided by Federal Circuit on May 1, 2025, resulted in a defendant win outcome. The case concerns the patentability of a method for treating a disease using a drug that has already ...
CAFC Affirms Patent Ineligibility of Nucleic Acid Detection Method
Boyd v. United States, decided by Federal Circuit on April 22, 2025, resulted in a defendant win outcome. The case concerns the patentability of a method for detecting and quantifying nucleic acid seq...
CaseLawBrief currently tracks 25 patent eligibility under 35 u s c 101 cases from Federal Circuit. This number is updated as new opinions are published.
Outcome breakdown: Defendant Win: 24, Plaintiff Win: 1.
Each case page on CaseLawBrief includes an AI-generated plain English summary, key holdings, and legal analysis. Click any case above to read its full analysis.