any case, is limited to a maximum of five additional years of patent term. But that maximum of five additional years is, itself, subject to a cap of a maximum of 14 years of patent protection from the date of marketing approval.
In March 2015, we licensed intellectual property related to certain antibodies from Dana-Farber. The intellectual property includes issued patents in a number of countries, including the United States and Europe, as well as pending patent applications in several countries elsewhere. The issued patents and pending patent applications relate generally to compositions and methods of treatment involving antibodies against PD-L1, CAIX, and GITR.
The PD-L1 segment of the portfolio includes two granted U.S. patents (U.S. Patent Nos. 9,828,434 and 10,604,581) directed to antibodies that bind to PD-L1 and methods of augmenting a patient’s immune response by administering an anti-PD-L1 antibody, respectively. The ‘434 patent is scheduled to expire October 4, 2033, and the ‘581 patent is scheduled to expire November 18, 2033, not including any patent term restorations, which might become available under the provisions of U.S. patent laws, based on regulatory delays associated with obtaining marketing approval. Two Australian (AU 2013326901 and 2018226425), one Japanese (JP 6461800), one South Korean (KR 101947702), one Israeli (IL 237737), one Mexican (MX 370848), one Colombian (CO 34878) and one Chinese counterpart patents have issued, and additional international counterpart applications are pending in Canada, China, Europe and Hong Kong. The issued international patents and any patents maturing from these pending applications will expire no sooner than October 2033. In June 2016, Checkpoint also filed a company-owned U.S. provisional application (U.S. 62/356,105) directed to antibodies and functional fragments thereof that bind to human PD-L1, and methods of inhibiting tumor cell proliferation in patients using such antibodies or functional fragments. The provisional application was converted into a PCT application (PCT/US2017/039810) in June 2017, and a U.S. non-provisional application (U.S. Appl. No. 15/636,610) was filed at the same time. The ’610 application has now issued as U.S. Patent No. 10,590,199 with claims directed to specific anti-PD-L1 antibodies and fragments thereof, as well as methods of treating tumors/cancers with anti-PD-L1 antibodies and fragments thereof. The ’199 patent is scheduled to expire on May 31, 2038, not including any patent term restorations, which might become available under the provisions of U.S. patent laws, based on regulatory delays associated with obtaining marketing approval. A further U.S. application, U.S. Appl. No. 16/818,621, was filed before the issuance of the ‘199 patent and is currently pending. An Israeli counterpart patent has also granted (IL 263611), and additional national stage applications are pending in Australia, Brazil, Canada, China, Europe, Hong Kong, Israel, India, Japan, South Korea, Mexico, New Zealand, Russia, Singapore and Thailand. Any patents maturing from these pending applications will expire no sooner than June 2037.
The CAIX segment of the portfolio includes two granted U.S. patents (U.S. Patent Nos. 8,466,263 and 10,450,383) and one pending U.S. application (U.S. Appl. No. 16/658,867). The ‘263 patent is directed to isolated human monoclonal antibodies and scFv antibodies that bind to CAIX (G250) protein, and compositions and kits comprising such antibodies. The term of the ‘263 patent runs to July 9, 2029. The ‘383 patent is directed to methods of treating cancer with anti-CAIX antibodies, and its term runs until April 28, 2027. The ‘263 patent, the ‘383 patent, and any patent issuing from the ‘867 application may be entitled to any patent term restorations that might become available under the provisions of U.S. patent laws, based on regulatory delays associated with obtaining marketing approval. The European counterpart patent (EP 1979379) is in force in Switzerland, Liechtenstein, Germany, France and the United Kingdom. A Canadian counterpart patent (CA 2,632,094) has also been issued. Both the European and Canadian counterpart patents, as well as any pending applications outside the United States, are scheduled to expire no sooner than December 2026.
The GITR segment of the portfolio includes an International Application No. PCT/US2015/054010, filed in October 2015, and International Application No. PCT/US2017/043504, filed in July 2017. National stage applications claiming priority to PCT/US2015/054010 are pending in Australia, Brazil, Canada, China, Israel, Japan, South Korea, New Zealand and Mexico. In the U.S., there is one granted patent (U.S. Patent No. 10,463,732) and one pending application (U.S. Appl. No. 16/672,763) that correspond with PCT/US2015.054010. Any of these national stage applications that issue or grant as patents, would expire no earlier than October 2035. National stage applications claiming priority to PCT/US2017/043504 are pending in the U.S. (U.S. Appl. No. 16/319,590), Australia, Brazil, Canada, China, Europe, Israel, Japan, South Korea, Singapore, Russian, New Zealand and Mexico. Any of these national stage applications that issue or grant as patents (including U.S. Application No. 16/319,590) would expire no earlier than July 2037.