definiens: means, with respect to ( a ) a given Editas Licensed Background Patent ( other than any such Patent Rights Control led by Editas under the Harvard -Broad Licenses ) or Editas Licensed Collaboration Patent, a challenge to the validity, patentability or enforceability of such Editas Licensed Background Patent or Editas Licensed Collaboration Patent, in a legal action or an administrative proceeding initiated by or on behalf of Juno ( or any of its Affiliates or Sublicensees ), but excluding any such challenge in defense of any claims raised by or on behalf of Editas ( or any of its Affiliates, sublicensees or In -License Counte rparty ) against Juno ( or any of its Affiliates or Sublicensees ), or otherwise in connection with an assertion of a cross -claim or a counter -claim ; and ( b ) any Patent Rights Controlled by Editas under the Harvard -Broad Licenses, to the extent applicable to a given Licensed Program, the patent challenge terms of Section 7.5 applicable to such Harvard -Broad License shall apply