Commitments and Contingencies
Abbreviated New Drug Application
In January 2025, the Company received a Paragraph IV notice of certification (the “First Notice Letter”) from Annora Pharma Private Limited (“Annora”) regarding U.S. Patent Nos. 10,662,160; 11,117,867; and 11,618,733. In January 2026, the Company received an additional Paragraph IV notice of certification (the “Second Notice Letter” and, together with the First Notice Letter, the “Notice Letters”) from Annora regarding U.S. Patent No. 12,344,585. The Notice Letters advise that Annora has submitted an Abbreviated New Drug Application (“ANDA”) to the FDA seeking approval to manufacture, use or sell a generic version of ORLADEYO in the United States prior to the expiration of four patents listed in the FDA’s Orange Book: U.S. Patent Nos. 10,662,160; 11,117,867; 11,618,733; and 12,344,585 (the “Challenged Patents”). The Notice Letters allege that the Challenged Patents, which expire in 2039, are invalid, unenforceable and/or will not be infringed by the commercial manufacture, use or sale of the generic product described in Annora’s ANDA. The Notice Letters do not challenge the following six ORLADEYO Orange Book patents that expire in 2035: U.S. Patent Nos. 10,125,102; 10,329,260; 10,689,346; 11,230,530; 11,708,333; and 12,116,346.
On March 10, 2025 (as supplemented by the First Amended Complaint filed in December 2025), the Company filed a patent infringement lawsuit in the United States District Court for the District of Delaware against Annora, Hetero Labs Limited, Hetero USA, Inc., and Camber Pharmaceuticals, Inc. (collectively, the “Defendants”), asserting infringement of the Challenged Patents arising from Annora’s ANDA filing with the FDA. The Company is seeking, among other remedies, equitable relief enjoining the Defendants from infringing the Challenged Patents, as well as an order that the effective date of any FDA approval of the ANDA would be a date no earlier than the expiration of the Challenged Patents (including any regulatory extensions). While the Company intends to vigorously defend its intellectual property rights protecting ORLADEYO, this matter is in the early stages of litigation and no assessment can be made as to the likely outcome of this matter or whether it will be material to the Company. Accordingly, an estimate of the potential loss, or range of loss, if any, to the Company relating to this matter is not possible at this time.
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Historical Timeline

Fiscal YearFiled
2025Feb 26, 2026Showing above
2024Feb 25, 2025
2020Mar 1, 2021
2019Mar 13, 2020
2018Mar 14, 2019
2017Mar 12, 2018
2016Feb 27, 2017
2015Feb 26, 2016

About Commitments Disclosures

Commitments and contingencies disclosures catalog a company's off-balance-sheet obligations and legal exposures — purchase commitments, guarantee arrangements, pending litigation, and regulatory proceedings. These items represent potential future cash outflows that may not appear as liabilities on the balance sheet until they become probable and estimable.

Key signals: litigation reserves and disclosed loss ranges quantify management's estimate of legal exposure, but unquantified "reasonably possible" losses often represent the larger risk. Watch for changes in language around pending cases — shifts from "remote" to "reasonably possible" or increases in estimated loss ranges signal deteriorating outcomes. Unconditional purchase obligations and take-or-pay contracts create fixed cost structures that reduce operational flexibility. Guarantee arrangements for subsidiaries or joint ventures can create cascading obligations. Compare the total commitment schedule against projected free cash flow to assess whether the company can meet its obligations without additional financing.