definiens: “ ‘ Valid Claim ’ means a claim of an issued and unexpired patent or a supplementary protection certificate, which claimhas not been held invalid or unenforceable by a court or other government agency of competent jurisdiction from which noappeal can be or has been taken and has not been held or admitted to be invalid or unenforceable through re - examination ordisclaimer, opposition procedure, nulity suit or otherwise . ” 23FOIA CONFIDENTIAL TREATMENT REQUESTEDPATENT LICENSE AGREEMENT EXHIBIT BPenn Patent RightsEXHIBIT B-1Composition PatentsPenn Docket No . P3233 : U.S. Patent Nos . 5,712,279 and 5,739,135European Patent 0,886,637 ( UK, IRE, ITL, SPA, GER, FRA, DEN, SWE and SWIT)Israeli Patent 116,917Canadian Patent Application 2,213,466Japanese Patent Application 525,679 / 1996Australian Patent 699865U.S. Patent Nos . 6,492,365 and 6,066,650EXHIBIT B-2Combination PatentsU.S. Patent No . 5,883,109EXHIBIT B-3Penn Existing PatentsPenn Docket No