Invalidity of Any Provision If any of the provisions of this Agreement becomes invalid, illegal or unenforceable in any respect under any law, the validity, legality and enforceability of the remaining provisions shall not in any way be affected or impaired thereby.
Survival of Provisions Upon Invalidity of Any Single Provision In case any provision in this Agreement shall be invalid, illegal or unenforceable, the validity, legality and enforceability of the remaining provisions shall not in any way be affected or impaired thereby.
Invalidity of Provisions If any provision of this Agreement is or becomes invalid, illegal or unenforceable in any respect, the validity, legality and enforceability of the remaining provisions contained herein shall not be affected thereby.
Invalidity of Subordination Provisions The subordination provisions of any agreement or instrument governing any Subordinated Debt is for any reason revoked or invalidated, or otherwise cease to be in full force and effect, any Person contests in any manner the validity or enforceability thereof or denies that it has any further liability or obligation thereunder, or the Indebtedness hereunder is for any reason subordinated or does not have the priority contemplated by this Agreement or such subordination provisions; or
Invalidity or Unenforceability Defenses or Actions In the event that a Third Party or Sublicensee asserts, as a defense or as a counterclaim in any infringement action under Section 8.4.1, that any Ambit Licensed Patent or Program Patent is invalid or unenforceable, then the Party pursuing such infringement action shall promptly give written notice to the other Party. Where such allegation is made in an opposition, reexamination, interference or other patent office proceeding, the provisions of Section 8.3.7 shall apply. Where such allegation is made in a counterclaim to a suit or other action brought under Section 8.4.1, the Party with the first right to enforce the Patent Rights at issue shall have the first right to respond to such defense or defend against such counterclaim (as applicable) and the provisions of Section 8.4.1 (including step-in rights and control over settlement) shall apply. In all other cases, including any declaratory judgment action or similar action or claim filed by a Third Party asserting that any Ambit Licensed Patent or Program Patent is invalid or unenforceable, Astellas shall have the first right to defend such action, at Astellas’s expense, and Ambit will cooperate with Astellas, at Astellas’s expense in such defense. In the event Astellas does not so elect to defend an action with respect to any Ambit Licensed Patent or Program Patent under this Section 8.3.8, it shall so notify Ambit in writing, and Ambit shall have the right to so defend such action, at Ambit’s expense; provided, however, that Ambit shall obtain the written consent of Astellas prior to ceasing to defend, settling or otherwise compromising such defense or counterclaim if such action is likely to materially adversely affect Astellas’s interests in the applicable Ambit Licensed Patent or Program Patent or rights under this Agreement. Each Party shall provide to the Party defending any such rights under this Section 8.3.8 all reasonable assistance in such enforcement, at such defending Party’s request and expense. The defending Party shall keep the other Party regularly informed of the status and progress of such efforts, and shall reasonably consider the other Party’s comments on any such efforts.