Federal Case Summaries
Coverage since November 3, 1994

Federal

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Classen Immunotherapies v. Biogen IDEC — Federal Circuit Addresses § 101 for Vaccination Scheduling Method Claims

The Federal Circuit held that Classen Immunotherapies’ method claims for identifying optimal vaccination schedules to reduce chronic immune-mediated disorders were patent-eligible under § 101 in part — distinguishing between claims that merely require correlating a natural relationship and cla

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CyberSource Corp. v. Retail Decisions — Federal Circuit Holds Credit Card Fraud Detection Method Is Unpatentable Mental Process

The Federal Circuit held that CyberSource’s patent on a method of detecting credit card fraud by tracking internet addresses was directed to an unpatentable mental process — a gathering and comparing of information that a human could perform in their mind — and that reciting a Beauregard compu

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Prometheus Laboratories v. Mayo Collaborative Services — Federal Circuit Upholds Diagnostic Method Patents (Later Reversed by Supreme Court)

The Federal Circuit upheld Prometheus’s patents on methods for optimizing thiopurine drug dosing based on metabolite blood levels, holding the claims directed to patent-eligible subject matter because they applied natural correlations through a physical transformation — a ruling the Supreme Co

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Research Corp. Technologies v. Microsoft — Federal Circuit Upholds Halftone Image Patents Under § 101, Rejects Overly Rigid Abstraction Test

The Federal Circuit upheld patents on digital image halftoning technology as patent-eligible subject matter, holding that mathematical algorithms applied to specific, practical technological problems are not so abstract as to be excluded from § 101, and cautioning against an overly rigid application

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