Invalidity or Unenforceability In case any one or more of the provisions contained in this Agreement shall, for any reason, be held to be invalid, illegal or unenforceable in any respect, such invalidity, illegality or unenforceability shall not affect the other provisions of this Agreement, and this Agreement shall be construed as if such invalid, illegal or unenforceable provision had never been contained herein.
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.
Partial Unenforceability The invalidity or unenforceability of any Section, paragraph or provision of this Agreement shall not affect the validity or enforceability of any other Section, paragraph or provision hereof. If any Section, paragraph or provision of this Agreement is for any reason determined to be invalid or unenforceable, there shall be deemed to be made such minor changes (and only such minor changes) as are necessary to make it valid and enforceable.
Invalidity Any provision of this Agreement which may be determined by competent authority to be prohibited or unenforceable in any jurisdiction shall, as to such jurisdiction, be ineffective to the extent of such prohibition or unenforceability without invalidating the remaining provisions hereof, and any such prohibition or unenforceability in any jurisdiction shall not invalidate or render unenforceable such provision in any other jurisdiction. In such case, the parties shall in good faith modify or substitute such provision consistent with the original intent of the parties.
Invalid or Unenforceable Provisions The invalidity or unenforceability of any particular provision of this Agreement shall not affect the other provisions hereof, and this Agreement shall be construed in all respects as if the invalid or unenforceable provisions were omitted.
