definiens: means, with respect to any Black Belt Patent Rights, to contest the validity or enforceability of any such Black Belt Patent Rights, in whole or in part, in any court, arbitration proceeding or other tribunal, including the United States Patent and Trade mark Office, the European Patent Office, and the United States International Trade Commission . As used in this term, the term includes ( a ) filing an action under 28 U.S.C. § § 2201 -2202 seeking a declaration of invalidity or une nforceability of any such Black Belt Patent Rights ; ( b ) filing, or joining in, a petition under 35 U.S.C. § 311 to institute inter partes review of any such Black Belt Patent Rights, or any portion thereof ; ( c ) filing, or joining in, a petition under 35 U. S.C. § 321 to institute post -grant review of any such Black Belt Patent Rights, or any portion thereof ; ( d ) any foreign equivalent of clauses ( a ), ( b ), or ( c ) in the Territory outside of the United States ; or ( e ) filing or commencing any opposition, nullit y or similar proceedings challenging the validity of any such Black Belt Patent Rights in any country outside the United States ; but excluding ( i ) filing a request under 35 U.S.C. § 302 for re -examination of any such Black Belt Patent Rights, ( ii ) filing a request under 35 U.S.C. § 251 for a reissue of any such Black Belt Patent Rights, or ( iii ) any foreign equivalents of the foregoing clauses ( i ) or ( ii ) applicable in the Territory outside of the United States