CytomX Breach. Regeneron will have the right to terminate this Agreement in the event of any material breach by CytomX of any terms and conditions of this Agreement ​; provided, however, that Regeneron has ​; provided further, however, that such termination will not be effective if such breach has been cured within ​ days after written notice thereof is given by Regeneron to CytomX specifying the nature of the alleged breach; provided further, however, if such breach is not reasonably subject to cure within ​ days after receipt of written notice thereof, then CytomX shall continue to use good faith efforts to cure such breach and shall have provided to Regeneron a written plan intended to cure (and that CytomX reasonably believes will cure) such breach as soon as reasonably practicable thereafter. Notwithstanding the foregoing in this [Section 13.3.1], in the event of a good faith dispute as to whether a material breach by CytomX has occurred, the foregoing cure period with respect thereto will be tolled pending final resolution of such dispute in accordance with the terms of this Agreement; provided, however, if such dispute relates to payment, such tolling of the cure period will only apply with respect to payment of the disputed amounts, and not with respect to any undisputed amount.

CytomX will have the right to terminate this Agreement in the event of any material breach by Regeneron of any terms and conditions of this Agreement ​; provided, however, that CytomX has ​; provided further, however, such termination will not be effective if such breach has been cured within ​ days after written notice thereof is given by CytomX to Regeneron specifying the nature of the alleged breach; provided further, however, if such breach (except for payment breaches) is not reasonably subject to cure within ​ days after receipt of written notice thereof, then Regeneron shall continue to use good faith efforts to cure such breach and shall have provided to CytomX a written plan intended to cure (and that Regeneron reasonably believes will cure) such breach as soon as reasonably practicable thereafter. Notwithstanding the foregoing in this [Section 13.2.1], in the event of a good faith dispute as to whether a material breach by Regeneron allowing for termination hereunder has occurred, the foregoing cure period with respect thereto will be tolled pending final resolution of such dispute in accordance with the terms of this Agreement; provided, however, if such dispute relates to payment, such tolling of the cure period will only apply with respect to payment of the disputed amounts, and not with respect to any undisputed amount.