Last Updated: August 19, 2026

Details for Patent: RE49948


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Which drugs does patent RE49948 protect, and when does it expire?

Patent RE49948 protects WELIREG and is included in one NDA.

This patent has fifty-three patent family members in twenty-eight countries.

Summary for Patent: RE49948
Title:Aryl ethers and uses thereof
Abstract:The present disclosure relates to HIF-2α inhibitors and methods of making and using them for treating cancer. Certain compounds were potent in HIF-2α scintillation proximity assay, luciferase assay, and VEGF ELISA assay, and led to tumor size reduction and regression in 786-O xenograft bearing mice in vivo.
Inventor(s):Darryl David DIXON, Jonas Grina, John A. Josey, James P. Rizzi, Stephen T. Schlachter, Eli M. Wallace, Bin Wang, Paul WEHN, Rui Xu, Hanbiao Yang
Assignee: Peloton Therapeutics Inc
Application Number:US17/592,108
Patent Claim Types:
see list of patent claims
Use; Composition;

Drugs Protected by US Patent RE49948

Applicant Tradename Generic Name Dosage NDA Approval Date TE Type RLD RS Patent No. Patent Expiration Product Substance Delist Req. Patented / Exclusive Use Submissiondate
Merck Sharp Dohme WELIREG belzutifan TABLET;ORAL 215383-001 Aug 13, 2021 RX Yes Yes RE49948 ⤷  Start Trial Y Y TREATMENT OF ADULT AND PEDIATRIC PATIENTS 12 YEARS AND OLDER WITH LOCALLY ADVANCED, UNRESECTABLE, OR METASTATIC PHEOCHROMOCYTOMA OR PARAGANGLIOMA (PPGL) ⤷  Start Trial
Merck Sharp Dohme WELIREG belzutifan TABLET;ORAL 215383-001 Aug 13, 2021 RX Yes Yes RE49948 ⤷  Start Trial Y Y TREATMENT OF ADULT PATIENTS WITH ADVANCED RENAL CELL CARCINOMA WITH A CLEAR CELL COMPONENT FOLLOWING A PROGRAMMED DEATH RECEPTOR-I OR PROGRAMMED DEATH-LIGAND 1 INHIBITOR AND A VASCULAR ENDOTHELIAL GROWTH FACTOR TYROSINE KINASE INHIBITOR ⤷  Start Trial
Merck Sharp Dohme WELIREG belzutifan TABLET;ORAL 215383-001 Aug 13, 2021 RX Yes Yes RE49948 ⤷  Start Trial Y Y TREATMENT OF ADULT PATIENTS WITH VON HIPPEL-LINDAU DISEASE WHO REQUIRE THERAPY FOR ASSOCIATED RENAL CELL CARCINOMA, CENTRAL NERVOUS SYSTEM HEMANGIOBLASTOMAS, OR PANCREATIC NEUROENDOCRINE TUMORS, NOT REQUIRING IMMEDIATE SURGERY ⤷  Start Trial
>Applicant >Tradename >Generic Name >Dosage >NDA >Approval Date >TE >Type >RLD >RS >Patent No. >Patent Expiration >Product >Substance >Delist Req. >Patented / Exclusive Use >Submissiondate

International Family Members for US Patent RE49948

Country Patent Number Estimated Expiration Supplementary Protection Certificate SPC Country SPC Expiration
Argentina 097600 ⤷  Start Trial
Australia 2014318025 ⤷  Start Trial
Canada 2919397 ⤷  Start Trial
China 105530923 ⤷  Start Trial
China 110372550 ⤷  Start Trial
Cuba 20160030 ⤷  Start Trial
>Country >Patent Number >Estimated Expiration >Supplementary Protection Certificate >SPC Country >SPC Expiration

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