otice from Participant terminate prospectively, unless if
within 60 days after receipt of notice You either: (i) agree in writing
to pay Participant a mutually agreeable reasonable royalty for Your past
and future use of Modifications made by such Participant, or (ii) withdraw
Your litigation claim with respect to the Contributor Version against such
Participant. If within 60 days of notice, a reasonable royalty and
payment arrangement are not mutually agreed upon in writing by the parties
or the litigation