Intel’s Win In Circuit Patent Fight Canceled by Appeals Court

Intel Corp. must keep fighting a patent infringement lawsuit because a district court misinterpreted claims and erroneously ruled that the chipmaker didn’t infringe the patents, a federal appeals court said.

The U.S. Court of Appeals for the Federal Circuit Feb. 8 sent back Continental Circuit LLC’s lawsuit to the lower court. Continental accused Intel of infringing four patents on making electrical devices, such as circuit boards, by joining insulation to material that conducts electricity with teeth-like structures on at least one surface.

The ruling clarifies how courts should apply specifications, which are detailed descriptions of an invention, when interpreting claims, ...