Agreements Related to Intellectual Property	3 Months Ended
Mar. 31, 2020
Agreements Related to Intellectual Property
Agreements Related to Intellectual Property	13. Agreements Related to Intellectual Property Asset Purchase Agreement – EPI Health, LLC In October 2019, the Company sold RHOFADE to EPI Health pursuant to an asset purchase agreement. EPI Health agreed to pay the Company a high single-digit royalty calculated as a percentage of net sales on a country-by-country basis until the date that the patent rights related to RHOFADE have expired or, if later, 10 years from the date of the first commercial sale of RHOFADE in such country. The Company recorded royalty income under the asset purchase agreement of $218 and $0 during the three months ended March 31, 2020 and 2019, respectively. EPI Health has also agreed to pay the Company potential sales milestone payments of up to $20,000 in the aggregate upon the achievement of specified levels of net sales of products covered by the asset purchase agreement, and 25% of any upfront, license, milestone, maintenance or fixed payment received by EPI Health in connection with any license or sublicense of the assets transferred in the disposition in any territory outside of the United States, subject to specified exceptions. Agreement and Plan of Merger - Confluence In August 2017, the Company entered into an Agreement and Plan of Merger, pursuant to which it acquired Confluence (the “Confluence Agreement”). In November 2018, the Company achieved a development milestone specified in the Confluence Agreement which was comprised of $2,500 in cash and 253,208 shares of its common stock with a fair value of $2,200. The Company also agreed to pay the former Confluence equity holders aggregate remaining contingent consideration of up to $75,000, based upon the achievement of specified regulatory and commercial milestones set forth in the Confluence Agreement. In addition, the Company agreed to pay the former Confluence equity holders future royalty payments calculated as a low single-digit percentage of annual net sales, subject to specified reductions, limitations and other adjustments, until the date that all of the patent rights for that product have expired, as determined on a country-by-country and product-by-product basis or, in specified circumstances, ten years from the first commercial sale of such product. In addition, if the Company sells, licenses or transfers any of the intellectual property acquired from Confluence pursuant to the Confluence Agreement to a third party, the Company will be obligated to pay the former Confluence equity holders a portion of any incremental consideration (in excess of the development and milestone payments described above) received from such sale, license or transfer in specified circumstances. License and Collaboration Agreement – Rigel Pharmaceuticals, Inc. In August 2015, the Company entered into an exclusive, worldwide license and collaboration agreement with Rigel Pharmaceuticals, Inc. (“Rigel”) for the development and commercialization of products containing two specified JAK inhibitors, which the Company refers to as ATI-501 and ATI-502. Under the agreement, the Company agreed to make aggregate payments of up to $80,000 upon the achievement of specified development milestones. During the three months ended September 30, 2019, the Company made a milestone payment of $4,000 to Rigel upon the achievement of a specified development milestone. With respect to any products the Company commercializes under the agreement, the Company will pay Rigel quarterly tiered royalties on its annual net sales of each product at a high single‑digit percentage of annual net sales, subject to specified reductions, until the date that all of the patent rights for that product have expired, as determined on a country‑by‑country and product‑by‑product basis or, in specified countries under specified circumstances, ten years from the first commercial sale of such product. In connection with an amendment of the agreement with Rigel in October 2019, the Company agreed to pay Rigel an amendment fee of $1,500 in three installments of $500 in January 2020, April 2020 and July 2020. In addition, the parties modified certain other development milestones, and the Company agreed to increase the potential payments payable upon the achievement of such milestones from $10,000 to $10,500 in the aggregate.

13. Agreements Related to Intellectual Property

Asset Purchase Agreement – EPI Health, LLC

In October 2019, the Company sold RHOFADE to EPI Health pursuant to an asset purchase agreement. EPI Health agreed to pay the Company a high single-digit royalty calculated as a percentage of net sales on a country-by-country basis until the date that the patent rights related to RHOFADE have expired or, if later, 10 years from the date of the first commercial sale of RHOFADE in such country. The Company recorded royalty income under the asset purchase agreement of $218 and $0 during the three months ended March 31, 2020 and 2019, respectively. EPI Health has also agreed to pay the Company potential sales milestone payments of up to $20,000 in the aggregate upon the achievement of specified levels of net sales of products covered by the asset purchase agreement, and 25% of any upfront, license, milestone, maintenance or fixed payment received by EPI Health in connection with any license or sublicense of the assets transferred in the disposition in any territory outside of the United States, subject to specified exceptions.

Agreement and Plan of Merger - Confluence

In August 2017, the Company entered into an Agreement and Plan of Merger, pursuant to which it acquired Confluence (the “Confluence Agreement”). In November 2018, the Company achieved a development milestone specified in the Confluence Agreement which was comprised of $2,500 in cash and 253,208 shares of its common stock with a fair value of $2,200. The Company also agreed to pay the former Confluence equity holders aggregate remaining contingent consideration of up to $75,000, based upon the achievement of specified regulatory and commercial milestones set forth in the Confluence Agreement. In addition, the Company agreed to pay the former Confluence equity holders future royalty payments calculated as a low single-digit percentage of annual net sales, subject to specified reductions, limitations and other adjustments, until the date that all of the patent rights for that product have expired, as determined on a country-by-country and product-by-product basis or, in specified circumstances, ten years from the first commercial sale of such product. In addition, if the Company sells, licenses or transfers any of the intellectual property acquired from Confluence pursuant to the Confluence Agreement to a third party, the Company will be obligated to pay the former Confluence equity holders a portion of any incremental consideration (in excess of the development and milestone payments described above) received from such sale, license or transfer in specified circumstances.

License and Collaboration Agreement – Rigel Pharmaceuticals, Inc.

In August 2015, the Company entered into an exclusive, worldwide license and collaboration agreement with Rigel Pharmaceuticals, Inc. (“Rigel”) for the development and commercialization of products containing two specified JAK inhibitors, which the Company refers to as ATI-501 and ATI-502. Under the agreement, the Company agreed to make aggregate payments of up to $80,000 upon the achievement of specified development milestones. During the three months ended September 30, 2019, the Company made a milestone payment of $4,000 to Rigel upon the achievement of a specified development milestone. With respect to any products the Company commercializes under the agreement, the Company will pay Rigel quarterly tiered royalties on its annual net sales of each product at a high single‑digit percentage of annual net sales, subject to specified reductions, until the date that all of the patent rights for that product have expired, as determined on a country‑by‑country and product‑by‑product basis or, in specified countries under specified circumstances, ten years from the first commercial sale of such product.

In connection with an amendment of the agreement with Rigel in October 2019, the Company agreed to pay Rigel an amendment fee of $1,500 in three installments of $500 in January 2020, April 2020 and July 2020. In addition, the parties modified certain other development milestones, and the Company agreed to increase the potential payments payable upon the achievement of such milestones from $10,000 to $10,500 in the aggregate.