English to German Law/Patents Law: Contract(s) Schweizer Rechtssprache

If the term of the Agreement is not extended or renewed following the extension period set forth in the Original Agreement, or if the Agreement is terminated as a result of the default of AAA, then AAA and AAA+++ shall mutually appoint a third-party national business valuator based in ....... to provide a valuation of the business of AAA+++, and AAA shall be required to purchase the business of AAA+++ based on such valuation within ninety (90) days from the date the valuation of the business is provided.

durch Verschulden von AAA?

Vielen Dank!