as Stryker may reasonably request in such determination. Stryker shall have [**] ("Acceptance Notification Period") following the date the Deliverable is received by Stryker to Accept or reject the Deliverable as described in Section 3.4. 3.4 Acceptance or Rejection. Respecting any Deliverable for Milestone #1 or Milestone #2, as set forth below, if Stryker determines that a Deliverable operates in accordance with and otherwise conforms to the applicable Acceptance Criteria pursuant to the R&D Work Plan, then Stryker will notify Conformis in writing that Stryker Accepts such Deliverable. If Stryker reasonably determines that a Deliverable does not operate in accordance with or otherwise conform to the applicable Acceptance Criteria, then Stryker will provide Conformis with a written notice of rejection within the Acceptance Notification Period describing the defect in view of the relevant Acceptance Criteria and including sufficient detail with respect to such Stryker testing and testing results as Conformis reasonably requests ("Failure Notice"). Conformis shall have [**] (or such longer period of time as may be agreed between the parties in good faith should the scope and complexity of the applicable Deliverable warrant some longer period of time) ("Redelivery Period") following the date it receives the Failure Notice to correct and redeliver the Deliverable. If Conformis timely delivers a corrected version of the Deliverable within the Redelivery Period, then Stryker will be 9 Source: CONFORMIS INC, 10-Q, 11/1/2019 entitled to repeat its acceptance analysis and testing process for the purposes of determining Acceptance as set forth in the R&D Work Plan until such Deliverable operates in accordance with or otherwise conforms to the applicable Acceptance Criteria; provided, however, that if Stryker properly rejects a particular Deliverable three (3) or more times in accordance with this Article III, or if Conformis fails to deliver a version or corrected version, as