Court of Appeals for the Federal Circuit June 21, 2002, 01-1557, 01-1651 (Vardon Golf Company, Inc. v. Karsten Manufacturing Corporation, Defendants-Cross)

DYK, Circuit Judge,

concurring.

I join the majority’s opinion because I agree that we are bound by our decision in Bayer AG. v. Biovail Corp., 279 F.3d 1340, 61 USPQ2d 1675 (Fed.Cir.2002), to apply regional circuit law to res judicata and collateral estoppel issues.2 I have serious *1336doubts, however, as to whether that is the correct result.