with respect to any Calendar Quarter, the aggregate amount of Net Sales that were made during such Calendar Quarter and any prior Calendar Quarter(s) during the same Calendar Year. 5.2 Service Fee. In partial consideration of Company's Promotion of the Product in accordance with the terms of this Agreement, and subject to the terms and conditions of this Agreement, with respect to each Calendar Quarter during Calendar Year 2019 and Calendar Year 2020, Janssen shall pay Company a service fee (the "Service Fee"), as follows: (a) with respect to each Calendar Quarter during Calendar Year 2019, an amount equal to (i) [***] percent ([***]%) of that portion of Cumulative Net Sales that is greater than the Baseline for Calendar Year 2019, less (ii) the total Service Fees that have been invoiced by Company to Janssen for all preceding Calendar Quarters of Calendar Year 2019; and (b) with respect to each Calendar Quarter during Calendar Year 2020, an amount equal to (i) [***] percent ([***]%) of that portion of Cumulative Net Sales that is greater than the Baseline for Calendar Year 2020, less (ii) the total Service Fees that have been invoiced by Company to Janssen for all preceding Calendar Quarters of Calendar Year 2020. Unless and until the Cumulative Net Sales exceed the Baseline for a particular Calendar Year, the Service Fee shall be zero. The foregoing calculation method is intended to ensure that each Service Fee for a Calendar Quarter includes a true-up amount of all Service Fees earned year-to-date in the same Calendar Year. 5.3 Milestones. 5.3.1 In partial consideration of Company's Promotion of the Product in accordance with the terms of this Agreement, and subject to the terms and conditions of this Agreement, Janssen shall pay Company milestone payments in accordance with this Section 5.3. Janssen shall