definiens: means any direct – or indirect through the action s of another person acting on [COMPANY] ’s or its Affiliate ’s or Sublicensee ’s behalf – dispute or challenge b y [COMPANY] or its Affiliate or Sublicensee, or any willful assist ance ( other than as compelled by subpoena or other legal process ) by [COMPANY] or its Affiliate or Sublicensee in the d ispute or challenge by another person or entity, of the validity, patentability, or enforceability of any Licensed Pa tent, or any equivalent Patent of Mirati outside th e Licensed Territory, or any claim 53 * * * Confidential Treatment Requested Execution thereof, or opposition or assistance in the opposit ion of the grant of any letters patent within the L icensed Patents, or any equivalent Patent of Mirati outside the Lice nsed Territory, in any legal or administrative proc eedings in a court of law, before any patent office or other sim ilar agency or tribunal with appropriate jurisdicti on in any country, territory or jurisdiction, including by re examination, inter partes review, opposition, inter ference, post - grant review, nullity proceeding, preissuance submi ssion, third party submission, derivation proceedin g or declaratory judgment action . If any Sublicensee of [COMPANY] conducts or materially participates in any Patent Challenge ( as defined above ), then Mirati may termi nate this Agreement on written notice, unless ( i ) s uch Patent Challenge activities are permanently ceased and ter minated within [ … * * * … ] of [COMPANY] ’s receipt of such notice from Mirati or ( ii ) [COMPANY] terminates the applicab le Sublicense Agreement in accordance with Section 2.2 within [ … * * * … ] of [COMPANY] ’s receipt of such written notice from Mirati