Federal Circuit Halts Energizer Battery Patent Claims

Law360, New York (April 21, 2008, 12:00 AM EDT) -- A federal appeals court has affirmed a U.S. International Trade Commission ruling, holding that an Energizer Holdings Inc. battery patent that was asserted against Chinese battery manufacturers on infringement claims was invalid.

In a 2-1 decision, the U.S. Court of Appeals for the Federal Circuit ruled on Monday that Energizer and subsidiary Eveready Battery Co. Inc.'s patent for mercury-free alkaline batteries was invalid because of problems with the patent's claim language.

Under claim construction mandated by the Federal Circuit in an earlier ruling, the ITC found...
To view the full article, register now.