(CA 2886433), and two Chinese (CN 104994873 and CN 10782719) 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 three granted U.S. patents (U.S. Patent Nos. 8,466,263, 10,450,383, and 11,174,323) and one pending U.S. application (U.S. Appl. No. 17/498,582). 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 ‘323 patent is directed to methods of treating renal cancer with anti-CAIX antibodies, and its term runs until February 11, 2027. The ‘263 patent, the ‘383 patent, the ‘323 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. All of the national stage applications claiming priority to PCT/US2015/054010 have lapsed; however, there is one granted patent (U.S. Patent No. 10,463,732) in this family. The ‘732 patent will not expire until at least October 2035, barring any patent term restorations that might become available under the provisions of U.S. patent laws. 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. One U.S. patent (U.S. 11,046,777) has issued in the patent family claiming priority to PCT/UC2017/043504, and this U.S. patent will not expire until at least July 2037, barring any patent term restorations that might become available under the provisions of the U.S. patent laws.
In March 2015, Fortress in-licensed intellectual property from NeuPharma, assigned to us by Fortress on the same date, which is directed to technology involving small molecules that are inhibitors of EGFR and kinase mutants, including the compound olafertinib. EGFR is a receptor tyrosine kinase of the ErbB family and is also known as “Her1” and “ErbB1.” The in-licensed patent estate includes four granted U.S. patents, a granted European patent, a granted patent in Hong Kong, a granted patent in Singapore, a granted patent in the Philippines, a granted Japanese patent, a granted South Korean patent, a granted Malaysian patent, two granted Australian patents, a granted New Zealand patent, two granted Israeli patents, a granted Mexican patent and a granted Russian patent. U.S. Patent No. 9,550,770 is directed to a generic formula of small molecules and also has a specific claim directed to the compound, olafertinib. The granted claims also cover pharmaceutically acceptable salts, pharmaceutical compositions, particular dosage forms and packaged goods. U.S. Patent No. 9,849,139 is directed to methods of inhibiting EGFR or an EGFR mutant in a subject in need thereof, comprising administering a therapeutically effective amount of the compounds of the ‘770 patent, including the compound, olafertinib. U.S. Patent No. 10,172,868 is directed to methods of treating non-small cell lung cancer with a specific list of compounds, including the compound, olafertinib. U.S. Patent No. 10,653,701 is directed to methods of treating skin cancer or lung cancer with a substituted quinazoline compound comprising an electrophilic group capable of forming a covalent bond with a nucleophile, which includes the compounds of the ‘868 patent (e.g., the compound, olafertinib). Additionally, there is a pending U.S. application in this family (U.S. Appl. No. 16/843,610) that was recently allowed, but has not yet issued, a further pending U.S. application (U.S. Appl. No. 17/681,387) has been filed. The granted foreign patents cover the compound, olafertinib, and a broad range of related compounds, salts, pharmaceutical