doctrine-of-equivalents Cases

Explore court opinions related to doctrine-of-equivalents. AI summaries of legal decisions in plain English.

Kendall v. Collins

cafc · 2026-03-31

This case involves a dispute over a patent for a "method and apparatus for detecting and measuring the concentration of analytes in a fluid sample." The inventor, Dr. Kendall, sued Collins, alleging t...

MacKey v. Collins

cafc · 2026-03-30

This case involves a dispute over a patent for a "method and apparatus for detecting and characterizing subsurface anomalies." The inventor, Mr. MacKey, sued Collins, alleging that Collins infringed o...

Ascendis Pharma A/S v. Biomarin Pharmaceutical Inc.

cafc · 2026-03-26

This case involves a patent dispute between Ascendis Pharma A/S and Biomarin Pharmaceutical Inc. regarding a drug used to treat achondroplasia, a form of dwarfism. Ascendis sued Biomarin, alleging tha...