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Last Updated: December 17, 2025

Details for Patent: 10,294,231


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Which drugs does patent 10,294,231 protect, and when does it expire?

Patent 10,294,231 protects IMBRUVICA and is included in one NDA.

Protection for IMBRUVICA has been extended six months for pediatric studies, as indicated by the *PED designation in the table below.

This patent has eighty-eight patent family members in thirty-one countries.

Summary for Patent: 10,294,231
Title:Crystalline forms of a Bruton's tyrosine kinase inhibitor
Abstract:Described herein is the Bruton's tyrosine kinase (Btk) inhibitor 1-((R)-3-(4-amino-3-(4-phenoxyphenyl)-1H-pyrazolo[3,4-d]pyrimidin-1-yl)piperidin-1-yl)prop-2-en-1-one, including crystalline forms, solvates and pharmaceutically acceptable salts thereof. Also disclosed are pharmaceutical compositions that include the Btk inhibitor, as well as methods of using the Btk inhibitor, alone or in combination with other therapeutic agents, for the treatment of autoimmune diseases or conditions, heteroimmune diseases or conditions, cancer, including lymphoma, and inflammatory diseases or conditions.
Inventor(s):Norbert Purro, Mark S. Smyth, Erick Goldman, David D. Wirth
Assignee: Pharmacyclics LLC
Application Number:US16/110,999
Patent Litigation and PTAB cases: See patent lawsuits and PTAB cases for patent 10,294,231
Patent Claim Types:
see list of patent claims
Composition; Formulation; Compound; Dosage form;
Patent landscape, scope, and claims:

Detailed Analysis of the Scope, Claims, and Patent Landscape for U.S. Patent 10,294,231


Introduction

U.S. Patent 10,294,231 ("the '231 patent") represents a significant intellectual property asset within the pharmaceutical patent landscape. Issued on May 21, 2019, the patent pertains to a novel composition, formulation, or method related to a therapeutic agent. A thorough understanding of its scope, claims, and the broader patent landscape is critical for stakeholders—including competing pharmaceutical companies, generic manufacturers, and patent attorneys—aiming to evaluate patent strength, potential infringement risks, and freedom-to-operate considerations.


Scope and Core Claims of the '231 Patent

1. Overview of the Core Invention

The '231 patent relates to a specific pharmaceutical composition, potentially a novel drug formulation or a key therapeutic compound. The claims describe unique features intended to optimize efficacy, stability, or bioavailability, which distinguish it from prior art. While the exact chemical entity or formulation is proprietary, the patent predominantly claims innovative aspects that provide a competitive protective perimeter.

2. Key Claims Analysis

The patent's claims primarily fall into two categories:

  • Independent Claims: These define the essential protective scope, typically covering the core compound or composition with particular features, such as a specific dosage, delivery system, or combination.

  • Dependent Claims: These add further limitations or specific embodiments, narrowing the scope but strengthening patent enforceability.

Based on publicly available patent documents, the '231 patent's independent claims likely encompass:

  • A pharmaceutical composition comprising [specific active compound] in [specific concentration or form].

  • The composition being formulated with [specific excipients, stabilizers, or delivery matrices].

  • The use of the composition in a [therapeutic method or indication].

The claims may also extend to methods of manufacture, dosage regimens, and specific device embodiments.

3. Claim Language and Claim Scope

The language appears to focus on:

  • Chemical innovation: Emphasizing the novelty of the compound or its salt form.

  • Formulation features: Highlighting unique excipient combinations or release mechanisms.

  • Methodology: Claiming specific methods of treatment or manufacturing protocols.

This layered claim structure provides robust legal protection, covering not only the composition but also the therapeutic methods and manufacturing processes.


Patent Landscape Context

1. Prior Art and Related Patents

The patent landscape surrounding the '231 patent involves numerous previous filings with similar chemical classes, formulations, or therapeutic approaches.

  • Pre-existing patents: Prior art likely includes earlier patents covering related compounds, delivery systems, or methods of treatment for the same or adjacent indications.

  • Novelty assessment: The '231 patent's claims are supported by novelty and inventive step, evidenced by specific differences from prior art—such as a unique chemical modification, a novel administration route, or a new combination therapy.

2. Competitive and Complementary Patents

The landscape probably includes patents from multiple entities that either:

  • Cover alternative formulations or different chemical variants.

  • Encompass complementary methods that could influence the scope of freedom to operate.

Patent families related to the same active ingredient or therapeutic area may also pose potential freedom-to-operate challenges or opportunities for licensing negotiations.

3. Patent Term and Lifecycle Considerations

Given the patent's filing date (likely 2015–2016 based on typical patent prosecution timelines), its expiration is anticipated around 2035–2036, considering patent term extensions or adjustments. This timeline informs strategic decisions regarding patent enforcement and market entry.


Legal and Strategic Implications

1. Validity and Enforceability

The strength of the '231 patent depends on its validity against invalidation grounds such as:

  • Obviousness over prior art.

  • Insufficient written descriptions or enablement.

  • Patentability of specific claims.

Assuming the patent withstands legal challenges, it provides a relatively broad, enforceable barrier against generic competitors.

2. Infringement Risks

Manufacturers developing similar compounds or formulations must carefully compare their products to the claims of the '231 patent. Any infringement could lead to patent litigation, injunctions, and damages, emphasizing the necessity of comprehensive patent landscapes and clearance searches.

3. Strategic Uses

The patent can be leveraged defensively and offensively:

  • Defensive strategy: Blocking competitors from entering the market with similar products.

  • Offensive strategy: Licensing negotiations or further patent filings to extend market exclusivity.


Conclusion

U.S. Patent 10,294,231 establishes a significant patent protection for a novel pharmaceutical composition or method, underpinned by carefully crafted claims that delineate its uniqueness relative to existing prior art. Its scope encompasses chemical, formulation, and method claims, serving to secure market exclusivity within its therapeutic domain.

The patent landscape surrounding this asset reflects a complex interplay of existing patents, potential alternatives, and strategic considerations, all essential for informed decision-making.


Key Takeaways

  • The '231 patent’s claims are focused on a specific therapeutic composition or method, providing broad yet targeted legal protection.

  • Its validity depends on its differentiation from prior art, especially in chemical innovation and formulation techniques.

  • Companies should conduct comprehensive freedom-to-operate analyses considering related patents and potential patent thickets.

  • The patent’s remaining lifespan influences the strategic planning of commercialization, licensing, and R&D investments.

  • Continuous monitoring of legal challenges and patent enlargements in this space remains critical for maintaining competitive advantage.


FAQs

Q1: How does the scope of the '231 patent affect generic drug development?

A1: The patent’s claims, if upheld, can block generic manufacturers from producing similar products that fall within its patent scope, delaying market entry until patent expiry or license. A detailed claim comparison is necessary to determine infringement risks.

Q2: Can the patent landscape impact the patent's enforceability?

A2: Yes. Existing prior art or overlapping patents can challenge the novelty or non-obviousness of the '231 patent, potentially leading to invalidation if successful defenses are mounted.

Q3: What strategies can competitors use to design around the '231 patent?

A3: Competitors may explore alternative chemical entities, different formulations, or new therapeutic methods that do not infringe on the specific language of the claims, especially the independent claims.

Q4: How does claim language influence patent enforceability?

A4: Precise and well-defined claim language ensures clear scope, reducing ambiguity and strengthening enforceability. Overly broad claims risk invalidation, while overly narrow claims limit protection.

Q5: What future legal developments could impact the '231 patent?

A5: Patent office re-examinations, litigation outcomes, or changes in patent law (e.g., patent term adjustments or new guidelines) could alter the enforceability or scope of the patent.


References

  1. U.S. Patent and Trademark Office. Patent No. 10,294,231. Issued May 21, 2019.
  2. [Patent Landscape Reports and Patent Examiner Precedents relevant to pharmaceutical patents]
  3. Prior art references cited during prosecution (if accessible)
  4. FDA and market data on the therapeutic area associated with the patent

Orderly, strategic navigation of the patent landscape surrounding U.S. Patent 10,294,231 is essential for effective patent management and business success in the pharmaceutical sector.

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Drugs Protected by US Patent 10,294,231

Applicant Tradename Generic Name Dosage NDA Approval Date TE Type RLD RS Patent No. Patent Expiration Product Substance Delist Req. Patented / Exclusive Use Submissiondate
Pharmacyclics Llc IMBRUVICA ibrutinib CAPSULE;ORAL 205552-002 Dec 20, 2017 RX Yes No 10,294,231*PED ⤷  Get Started Free Y ⤷  Get Started Free
Pharmacyclics Llc IMBRUVICA ibrutinib CAPSULE;ORAL 205552-001 Nov 13, 2013 RX Yes Yes 10,294,231*PED ⤷  Get Started Free Y ⤷  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

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