Common use of Termination for Challenge Clause in Contracts

Termination for Challenge. Amgen shall have the right to terminate this Agreement should Novartis, its Affiliate or its or their licensee under the Amgen Patents or Amgen Product Trademarks bring or join any challenge to the validity or enforceability of any Amgen Patent or Amgen Product Trademark and Novartis, its Affiliate or its or their licensee has not withdrawn from such challenge within [*] days following receipt of a written notice from Amgen to withdraw.

Termination for Challenge. Amgen shall have the right to terminate this Agreement should Novartis, its Affiliate or its or their licensee under the Amgen Patents or Amgen Product Trademarks bring or join any challenge to the validity or enforceability of any Amgen Patent or Amgen Product Trademark and Novartis, its Affiliate or its or their licensee has not withdrawn from such challenge within [***] days following receipt of a written notice from Amgen to withdraw.

Termination for Challenge. Amgen shall have the right to terminate this Agreement should Novartis, its Affiliate or its or their licensee under the Licensed Amgen Patents or Licensed Amgen Product Trademarks bring or join any challenge to the validity or enforceability of any Licensed Amgen Patent or Licensed Amgen Product Trademark and Novartis, its Affiliate or its or their licensee has not withdrawn from such challenge within [*] days following receipt of a written notice from Amgen to withdraw.