Clarifying Claim Construction In Interferences

Law360, New York (February 19, 2010, 1:05 PM EST) -- The Federal Circuit recently clarified substantive interference practice in Koninklijke Philips Electronics NV v. Cardiac Science Operating Company, No. 2009-1241, 2010 WL 10913 (Fed. Cir. Jan. 5, 2010) (“Philips”). Philips shows that several practices often overlooked amid the complexities of interference practice can profoundly affect the outcome.

First, claim construction in an interference does not follow the normal paradigm. Depending upon the challenges raised, a given claim might have two meanings: one based upon your own specification and one based upon the specification of your opponent....
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