definiens: means all : ( a ) unexpired letters patent ( including inventor ’s certificates ) which havenot been held invalid or unenforceable by a court of competent jurisdiction from which no appeal can betaken or has been taken within the required time period ( and which have not been admitted to be invalid orunenforceable through reissue, disclaimer or otherwise, or been abandoned in accordance with or aspermitted by the terms of this Agreement or by mutual written agreement ), including any substitution, extension, registration, confirmation, validation, reissue, re - examination, supplementary protectioncertificates, confirmation patents, patent of additions, renewal or any like filing thereof ; ( b ) pendingapplications for letters patent which have not been canceled, withdrawn from consideration, finallydetermined to be unallowable by the applicable governmental authority or court for whatever reason ( andfrom which no appeal is or can be taken ), and/or abandoned in accordance with or as permitted by theterms of this Agreement or by mutual written consent, including any continuation, division or continuation - in - part thereof and any provisional applications ; and ( c ) any United States and international counterpartsto any of ( a ) and ( b ) above