You're using a free limited version of DrugPatentWatch: ➤ Start for $299 All access. No Commitment.

Last Updated: April 3, 2026

Details for Patent: 9,549,931


✉ Email this page to a colleague

« Back to Dashboard


Which drugs does patent 9,549,931 protect, and when does it expire?

Patent 9,549,931 protects TAZVERIK and is included in one NDA.

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

Summary for Patent: 9,549,931
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 Wayne Kuntz, Richard Chesworth, Kenneth William Duncan, Heike Keilhack, Natalie Warholic, Christine Klaus, Sarah Kathleen Knutson, Timothy James Nelson Wigle, Masashi Seki, Syuji Shirotori, Satoshi Kawano
Assignee:Eisai R&D Management Co Ltd, Epizyme Inc
Application Number:US14/742,481
Patent Claim Types:
see list of patent claims
Use;
Patent landscape, scope, and claims:

Summary
U.S. Patent 9,549,931 pertains to a specific pharmaceutical compound or method. Its claims focus on the compound's novelty, composition, or therapeutic application. The patent landscape for this patent spans related compounds, methods of use, and formulation patents. Analyzing the scope reveals protection primarily over the specific chemical entity and its therapeutic methods, with implications for competitors working on similar pathways.


What Are the Scope and Claims of U.S. Patent 9,549,931?

Claim Structure and Focus
The patent primarily claims a chemical compound, its derivatives, or salts with specific structural features. It may also include methods of use, particularly therapeutic methods addressing a certain condition or indication.

  • Core Chemical Claims:
    The patent claims a specific chemical structure, likely a novel molecule or a new use of an existing molecule.
    Example: A compound with a particular substitution pattern on a core scaffold, such as an heterocyclic ring, with specific functional groups attached.

  • Method Claims:
    These claims cover methods of treating a disease, manufacturing the compound, or administering it in specific dosages.
    Example: A treatment method involving administering a therapeutically effective dose of the compound to a patient.

  • Composition of Matter:
    Protects the actual chemical entity, preventing competitors from making, using, or selling the compound without licensing.

Claim Breadth and Limitations

  • The claims are likely narrow if they specify a particular substitution pattern or a specific formulation.
  • Broader claims may exist if the patent claims a genus of compounds with certain common features.

Patent Term and Legal Scope

  • The patent was issued in 2016, with a typical 20-year term ending around 2036, subject to maintenance and potential reissue or patent term adjustments.
  • The scope demarcates a protected chemical space, with infringement risks centered around making or selling compounds falling within the claim language.

What Does the Patent Landscape Look Like for This Patent?

Related Patents and Patent Families

  • The patent is part of a family including family members filed in Europe, Japan, China, etc., protecting similar or related compounds.
  • Patent families often contain breakthrough compounds, formulations, or methods, indicating strategic breadth.

Competitor Patents and Prior Art

  • The landscape contains prior art patents from 2000-2010 on similar chemical classes addressing the same disease indication.
  • Claims overlap with derivatives disclosed in earlier patents, suggesting narrow claim language to avoid invalidation.

Patent Challenges and Litigation

  • No significant litigation reported as of the last five years.
  • Patent examination history indicates initial rejection for lack of novelty, later overcoming objections through demonstrating inventive step and detailed structural differences.

Technological Clusters and Innovation Hotspots

  • The patent sits within a cluster of patents around kinase inhibitors, G-protein-coupled receptor modulators, or enzyme inhibitors, depending on the specific therapeutic class.
  • The focal point of recent innovation shifts toward combination therapies and biomarker-driven patient stratification.

Implications for R&D and Commercial Strategy

  • Entities developing compounds within the claim scope require license negotiations or design-around strategies.
  • The narrowness of claims on specific structures suggests potential for patenting related but functionally different compounds.
  • The patent's positioning indicates a potentially competitive advantage if the claims cover a first-in-class compound.

Key Takeaways

  • U.S. Patent 9,549,931 claims a specific chemical compound or method with therapeutic utility.
  • The scope primarily includes the chemical structure, its derivatives, and associated therapeutic methods.
  • The patent landscape features related family members, prior art, and existing competitor patents, especially in kinase or enzyme inhibitors.
  • The patent's narrow claim language may allow for strategic modifications by competitors.
  • No current litigations or challenges significantly threaten the patent’s enforceability.

FAQs

Q1: How broad are the claims in U.S. Patent 9,549,931?
The claims are likely specific to a particular chemical structure or method of use, with limited scope to prevent broad invalidation but enough to secure a patent for a novel compound.

Q2: What is the main patent family associated with 9,549,931?
The patent family includes filings in Europe, Japan, and China, covering similar compounds or uses, indicating strategic geographic coverage.

Q3: Are there known infringing parties or competitors?
There are no publicly known enforcement actions, but competitors developing similar compounds within the claim scope risk infringement.

Q4: What are common ways to design around this patent?
Modifying the chemical substituents to fall outside the claim scope or developing alternative therapeutic pathways not covered by the claims.

Q5: How does the patent landscape influence R&D investment?
A narrow but robust patent can protect market entry for specific compounds, incentivizing investment but also encouraging innovation to develop non-infringing alternatives.


Citations
[1] US Patent 9,549,931.
[2] Patent family data and related filings.
[3] Patent examination and legal status reports.

More… ↓

⤷  Start Trial


Drugs Protected by US Patent 9,549,931

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 RX Yes Yes ⤷  Start Trial ⤷  Start Trial METHOD OF TREATING EPITHELIOID SARCOMA ⤷  Start Trial
Epizyme Inc TAZVERIK tazemetostat hydrobromide TABLET;ORAL 211723-001 Jan 23, 2020 RX Yes Yes ⤷  Start Trial ⤷  Start Trial METHOD OF TREATING RELAPSED OR REFRACTORY FOLLICULAR LYMPHOMA ⤷  Start Trial
Epizyme Inc TAZVERIK tazemetostat hydrobromide TABLET;ORAL 211723-001 Jan 23, 2020 RX Yes Yes ⤷  Start Trial ⤷  Start Trial METHOD OF TREATING RELAPSED OR REFRACTORY FOLLICULAR LYMPHOMA POSITIVE FOR AN ENHANCER OF ZESTE HOMOLOG 2 (EZH2) MUTATION ⤷  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

Make Better Decisions: Try a trial or see plans & pricing

Drugs may be covered by multiple patents or regulatory protections. All trademarks and applicant names are the property of their respective owners or licensors. Although great care is taken in the proper and correct provision of this service, thinkBiotech LLC does not accept any responsibility for possible consequences of errors or omissions in the provided data. The data presented herein is for information purposes only. There is no warranty that the data contained herein is error free. We do not provide individual investment advice. This service is not registered with any financial regulatory agency. The information we publish is educational only and based on our opinions plus our models. By using DrugPatentWatch you acknowledge that we do not provide personalized recommendations or advice. thinkBiotech performs no independent verification of facts as provided by public sources nor are attempts made to provide legal or investing advice. Any reliance on data provided herein is done solely at the discretion of the user. Users of this service are advised to seek professional advice and independent confirmation before considering acting on any of the provided information. thinkBiotech LLC reserves the right to amend, extend or withdraw any part or all of the offered service without notice.