Last Updated: November 7, 2026

Details for Patent: 9,855,275

Name: Drug Patent Intelligence for US Patent 9855275
Creator: DrugPatentWatch
License: https://www.drugpatentwatch.com/terms.php

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Which drugs does patent 9,855,275 protect, and when does it expire?

Patent 9,855,275 protects TAZVERIK and is included in one NDA.

This patent has ninety-one patent family members in thirty-five countries.

Summary for Patent: 9,855,275

Title:	Aryl-or heteroaryl-substituted benzene compounds
Abstract:	The present invention relates to aryl- or heteroaryl-substituted benzene compounds. The present invention also relates to pharmaceutical compositions containing these compounds and methods of treating cancer by administering these compounds and pharmaceutical compositions to subjects in need thereof. The present invention also relates to the use of such compounds for research or other non-therapeutic purposes.
Inventor(s):	Kevin W. Kuntz, Richard Chesworth, Kenneth W. Duncan, Heike Keilhack, Natalie Warholic, Christine Klaus, Sarah K. Knutson, Timothy J. N. Wigle, Masashi Seki, Syuji Shirotori, Satoshi Kawano
Assignee:	Eisai R&D Management Co Ltd , Epizyme Inc
Application Number:	US15/598,078
Patent Claim Types: see list of patent claims	Use; Delivery;

Drugs Protected by US Patent 9,855,275

Glossary

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Applicant	Tradename	Generic Name	Dosage	NDA	Approval Date	TE	Type	RLD	RS	Patent No.	Patent Expiration	Product	Substance	Delist Req.	Patented / Exclusive Use	Submissiondate
Epizyme Inc	TAZVERIK	tazemetostat hydrobromide	TABLET;ORAL	211723-001	Jan 23, 2020		DISCN	Yes	No	⤷ Start Trial	⤷ Start Trial				METHOD OF TREATING EPITHELIOID SARCOMA	⤷ 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 9,855,275

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Country	Patent Number	Estimated Expiration	Supplementary Protection Certificate	SPC Country	SPC Expiration
Argentina	086008	⤷ Start Trial
Australia	2012242595	⤷ Start Trial
Brazil	112013026324	⤷ Start Trial
Brazil	122020006541	⤷ Start Trial
>Country	>Patent Number	>Estimated Expiration	>Supplementary Protection Certificate	>SPC Country	>SPC Expiration

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