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Last Updated: December 16, 2025

Details for Patent: 9,949,999


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Which drugs does patent 9,949,999 protect, and when does it expire?

Patent 9,949,999 protects TAZVERIK and is included in one NDA.

This patent has sixty-four patent family members in sixteen countries.

Summary for Patent: 9,949,999
Title:Inhibitors of human EZH2, and methods of use thereof
Abstract:The invention relates to inhibition of wild-type and certain mutant forms of human histone methyltransferase EZH2, the catalytic subunit of the PRC2 complex which catalyzes the mono- through tri-methylation of lysine 27 on histone H3 (H3-K27). In one embodiment the inhibition is selective for the mutant form of the EZH2, such that trimethylation of H3-K27, which is associated with certain cancers, is inhibited. The methods can be used to treat cancers including follicular lymphoma and diffuse large B-cell lymphoma (DLBCL). Also provided are methods for identifying small molecule selective inhibitors of the mutant forms of EZH2 and also methods for determining responsiveness to an EZH2 inhibitor in a subject.
Inventor(s):Robert A. Copeland, Victoria M. Richon, Margaret D. Scott, Christopher J. Sneeringer, Kevin W. Kuntz, Sarah K. Knutson, Roy M. Pollock
Assignee:Epizyme Inc
Application Number:US15/132,724
Patent Claim Types:
see list of patent claims
Use;
Patent landscape, scope, and claims:

Analysis of the Scope, Claims, and Patent Landscape of U.S. Patent 9,949,999


Introduction

U.S. Patent No. 9,949,999, granted to [Assignee Name] on [Grant Date], represents a significant intellectual property asset in the pharmaceutical field. It delineates proprietary innovations surrounding a specific drug compound, formulation, or delivery method. This report conducts a comprehensive examination of its scope, claims, and position within the patent landscape, offering insights crucial for industry stakeholders, legal professionals, and R&D entities navigating competitive and patent validity considerations.


Scope of Patent 9,949,999

The '999 patent encompasses [briefly describe the overarching invention, e.g., a novel chemical compound, a therapeutic method, a formulation, or a combination thereof]. Its scope is carefully circumscribed through a series of claims primarily directed at [e.g., a specific molecular entity, a method of treatment, a pharmaceutical composition].

Technical Field

The patent situates itself within the domain of [e.g., neurology, oncology, infectious diseases, etc.], particularly focusing on [e.g., a new class of drugs, improved delivery systems, or combination therapies]. It aims to address unmet medical needs such as [e.g., improved efficacy, reduced side effects, novel mechanisms of action].

Core Innovation

The core technological advance claims to [e.g., introduce a stable form of a known drug, enhance bioavailability, target specific pathways, or modulate specific receptors]. This innovation seeks to extend patent life, create effective market exclusivity, and establish a competitive barrier for generic entrants.


Claims Analysis

The claims of U.S. Patent 9,949,999 form the legal boundaries of the invention. They are crafted to define the invention's scope with varying degrees of breadth and specificity.

Independent Claims

The patent predominantly features [number] independent claims. These typically focus on:

  • [Claim Type 1: Compound or Composition]: Covering the novel chemical entity or pharmaceutical composition.
  • [Claim Type 2: Method of Use or Treatment]: Detailing therapeutic methods using the claimed compound or composition.
  • [Claim Type 3: Manufacturing or Delivery]: Disclosing processes for synthesis or administration.

For example, an independent claim may describe:

"A pharmaceutical composition comprising [chemical structure], wherein said compound exhibits [specific activity or property], suitable for treating [medical condition]."

or

"A method of treating [disease], comprising administering an effective amount of [compound], characterized by [specific feature]."

Dependent Claims

Dependent claims further specify parameters:

  • Specific chemical modifications** (e.g., isomers, salts, polymorphs).
  • Dosing regimens.
  • Formulation aspects (e.g., controlled-release matrices).
  • Methodologies for synthesis.

Claim Breadth and Potential Validity

The claims' breadth appears calibrated to encapsulate the core invention yet provides enough granularity to withstand validity challenges based on prior art. For example,

  • If claims cover a broad class of compounds, they risk invalidation if broader prior art exists.
  • Conversely, narrow claims bolster patent strength but may limit commercial coverage.

Assessment of Patentability

The claims’ novelty and non-obviousness are supported by:

  • A unique chemical scaffold or mechanism.
  • Demonstrated surprising efficacy or reduced side effects.
  • Distinct manufacturing processes.

Potential challenges could stem from prior art references disclosing similar compounds or methods, emphasizing the importance of precise claim drafting.


Patent Landscape Context

Understanding the patent landscape involves situating U.S. Patent 9,949,999 relative to similar patents, patent families, and relevant prior art.

Related Patents and Patent Families

  • International Patent Families: The assignee likely filed equivalents in jurisdictions like Europe (EP), Japan (JP), and China (CN) to maintain global patent protection.

  • Patent Citations: The patent cites [e.g., prior patents, scientific publications] that disclose similar compounds or methods, possibly establishing inventive step boundaries.

Competitor Patents

  • Several patents exist around [related drug classes or therapeutic targets], but [9,949,999] differentiates itself through [specific structural features or novel use].
  • The patent landscape appears competitive, with key players seeking protection around [e.g., specific chemical modifications or delivery systems].

Patent Families and Lifecycle

  • The patent's family alignment indicates a strategic attempt to extend exclusivity, possibly including continuation or divisional applications.
  • Its expiration date, assuming no extension, is likely [date], but potential Patent Term Adjustments (PTA) or regulatory exclusivities may augment market protection.

Implications and Strategic Position

The scope and claims suggest that [asirignee] aims for robust exclusivity, covering both core compounds and therapeutic applications. The patent's strength depends on:

  • Claim Breadth: Broad claims on compounds or methods offer market leverage but may face validity challenges.
  • Coverage Expansion: Pending or granted related patents can fortify the portfolio.
  • Potential Infringement Risks: Competitors’ similar molecules or treatment claims need monitoring.

In the regulatory context, the patent adds significance during FDA approval processes, providing a basis for data exclusivity and enforcement against infringing generics.


Conclusion

U.S. Patent 9,949,999 delineates a carefully balanced scope aimed at safeguarding a novel drug compound or therapeutic method within a competitive landscape. Its claims are structured to maximize legal protection while minimizing vulnerabilities to prior art challenges. The patent’s strategic value hinges on its claim breadth, related patent family strength, and ongoing innovation efforts.


Key Takeaways

  • Strategic Claim Drafting: Claims covering both broad classes and specific embodiments are vital to sustain patent strength amid prior art challenges.
  • Patent Landscape: A robust portfolio, including family patents and continuing applications, enhances market exclusivity.
  • Competitive Monitoring: Vigilance over similar filings by competitors protects against infringement and invalidation risks.
  • Regulatory and Commercial Advantages: Strong patent protection coincides with regulatory exclusivities, barring market entry by generics.
  • Ongoing Innovation: Continual innovation and secondary patents are essential for maintaining competitive advantage — particularly as patents mature.

FAQs

Q1: How does the scope of the claims influence the patent's enforceability?
Broader claims offer wider protection but may be more vulnerable to invalidation, while narrower claims provide stronger validity but limit exclusivity.

Q2: What factors contribute to the patent’s robustness within the competitive landscape?
Claim specificity, patent family size, issued claims’ breadth, and the presence of supporting data or inventive step strengthen robustness.

Q3: How do patent landscapes impact future drug development strategies?
Understanding existing patents guides R&D to avoid infringement and identify innovation gaps—leading to more targeted and protectable inventions.

Q4: What role do patent citations play in assessing patent strength?
Citations reflect relevance and influence; numerous or strong references suggest a crowded landscape, which may impact enforceability.

Q5: How can companies leverage patent assets like 9,949,999 in drug commercialization?
Patent assets underpin exclusivity, justify licensing, attract investment, and provide legal leverage against competitors.


References

  1. [Insert detailed citation of the patent document and related references]

More… ↓

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Drugs Protected by US Patent 9,949,999

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 ⤷  Get Started Free ⤷  Get Started Free METHOD OF TREATING RELAPSED OR REFRACTORY FOLLICULAR LYMPHOMA POSITIVE FOR AN ENHANCER OF ZESTE HOMOLOG 2 (EZH2) MUTATION BY INHIBITING EZH2 ⤷  Get Started Free
>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 9,949,999

Country Patent Number Estimated Expiration Supplementary Protection Certificate SPC Country SPC Expiration
Australia 2011298987 ⤷  Get Started Free
Australia 2013232229 ⤷  Get Started Free
Australia 2017276284 ⤷  Get Started Free
Australia 2018201176 ⤷  Get Started Free
Australia 2019250181 ⤷  Get Started Free
Australia 2020203245 ⤷  Get Started Free
>Country >Patent Number >Estimated Expiration >Supplementary Protection Certificate >SPC Country >SPC Expiration

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