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Commitments and Contingencies | 12 Months Ended
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Dec. 31, 2022
Commitments and Contingencies |
Commitments and Contingencies | 12. Commitments and Contingencies Collaborative Agreements, Royalties and Milestone Payments The Company has committed to make potential future milestone payments and legal fees to third parties as part of licensing and development programs. Payments under these agreements become due and payable only upon the achievement of certain developmental, regulatory and commercial milestones by the Company’s licensees. Because it is uncertain if and when these milestones will be achieved, such contingencies, aggregating up to $6.3 million (assuming one product per contract meets all milestones events) have not been recorded on the accompanying consolidated balance sheets. The Company is unable to determine precisely when and if payment obligations under the agreements will become due as these obligations are based on milestone events, the achievement of which is subject to a significant number of risks and uncertainties. None of these milestones were assessed to be probable as of December 31, 2022. Contingent Consideration ​ Pursuant to the Company’s agreements with Bioasis, Aronora, Kuros, Affitech, and ObsEva the Company has committed to pay the Bioasis Contingent Consideration, the Aronora Royalty Milestones, the Kuros Sales Milestones, the Affitech Sales Milestones, the ObsEva Sales Milestones, the ObsEva Non-Sales Milestones, and the Merck KGaA royalties. The Company recorded $0.1 million for the Bioasis Contingent Consideration which, represents the estimated fair value of the potential future payments at the inception of the Bioasis RPA. The contingent consideration is remeasured at fair value at each reporting period, with changes in fair value recorded in other income (expense), net. As of December 31, 2022, there has been no change in the estimated fair value of the Bioasis Contingent Consideration from the initial value. The liability for future Aronora Royalty Milestones, Kuros Sales Milestones, and Affitech Sales Milestones will be recorded when the amounts, by product, are estimable and probable. The liability for future ObsEva Non-Sales Milestones, ObsEva Sales Milestones and Merck KGaA royalties will be recorded at the time that the corresponding underlying revenue under the Organon License Agreement is recognized. As of December 31, 2022, none of these Aronora Royalty Milestones, Kuros Sales Milestones, Affitech Sales Milestones, ObsEva Non-Sales Milestones, ObsEva Sales Milestones, or Merck KGaA royalties were assessed to be probable and as such, no liability was recorded on the consolidated balance sheet. Arbitration Proceeding In June 2021, the Company initiated an arbitration proceeding against one of its licensees (the “Licensee”) with the American Arbitration Association/International Centre for Dispute Resolution. XOMA seeks damages, plus interest, and fees and costs of the arbitration (which fees and costs are currently estimated to be in the mid-single-digit millions of U.S. dollars range). In response, the Licensee seeks declarations that the License Agreement, under XOMA’s interpretation, is unlawful, void and unenforceable, and that the License Agreement has expired. To date, the Licensee has not filed any counterclaims against XOMA. However, to the extent the Licensee is deemed to be the prevailing party, the arbitrators, in their discretion, may require XOMA to pay the Licensee’s fees and costs of the arbitration (currently estimated to be in the mid-single-digit millions of U.S. dollars range). A hearing before a panel of arbitrators was held on this matter in November 2022, and the parties have submitted post-hearing briefs. ​

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