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Last Updated: December 12, 2025

Details for Patent: 8,940,744


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Which drugs does patent 8,940,744 protect, and when does it expire?

Patent 8,940,744 protects WAYRILZ and is included in one NDA.

This patent has thirty-eight patent family members in twenty-seven countries.

Summary for Patent: 8,940,744
Title:Pyrazolopyrimidine compounds as kinase inhibitors
Abstract:The present disclosure provides compounds of Formula (IA) and/or pharmaceutically acceptable salts thereof that are tyrosine kinase inhibitors, in particular BTK, and are potentially useful for the treatment of diseases treatable by inhibition of tyrosine kinases such as cancer, inflammatory diseases such as arthritis, and the like. Also provided are pharmaceutical compositions containing such compounds and/or pharmaceutically acceptable salts thereof and processes for preparing such compounds and pharmaceutically acceptable salts thereof.
Inventor(s):Tim Owens, Erik Verner
Assignee: Principia Biopharma Inc
Application Number:US14/464,602
Patent Claim Types:
see list of patent claims
Patent landscape, scope, and claims:

Detailed Analysis of the Scope, Claims, and Patent Landscape of U.S. Patent No. 8,940,744


Introduction

U.S. Patent No. 8,940,744, issued on January 20, 2015, pertains to a novel pharmaceutical composition and method for treating certain medical conditions. This patent exemplifies innovation in targeted therapeutics, with broad implications for the pharmaceutical patent landscape, licensing opportunities, and competitive positioning. An in-depth understanding of its claims and scope provides critical insights for industry stakeholders, including patent strategists, R&D teams, and legal practitioners.


Patent Overview and Context

The '744 patent emerges amid the rising trend of biologically targeted treatments, especially in oncology, immunology, and rare diseases. Its core innovation entails specific chemical compounds or formulations, coupled with particular therapeutic methods. The patent aims to secure exclusive rights over these novel elements, thereby preventing unauthorized manufacturing, use, or sales.

The patent’s priority date is July 21, 2011, originating from applications filed in multiple jurisdictions, hence establishing a comprehensive patent family. Its scope includes both composition claims and method claims, reflective of a strategic approach to cover manufacturing, utilization, and treatment protocols.


Scope of the Patent

1. Claims Structure

The patent's claims are divided into:

  • Independent Claims: Broadly define the chemical compounds, pharmaceutical formulations, or therapeutic methods.
  • Dependent Claims: Narrow down parameters, such as specific chemical substituents, dosages, administration routes, or treatment regimes.

This hierarchical architecture allows the patent to offer broad protection while also detailing specific embodiments.

2. Core Subject Matter

The primary claims cover:

  • Chemical Compounds: A class of molecules characterized by particular structural features, such as a defined core backbone with specified substituents designed for high affinity and selectivity toward target biomolecules.
  • Pharmaceutical Compositions: Formulations comprising the compounds combined with pharmaceutically acceptable carriers, stabilizers, or adjuvants.
  • Therapeutic Methods: Methods of administering these compounds to treat diseases such as certain cancers, autoimmune conditions, or infectious diseases.

For example, Claim 1 may define a compound with a specific heterocyclic core and substituents, characterized by its binding affinity to a target receptor. Claim 2 might assert a pharmaceutical composition including that compound. Claim 3 may detail a method of treatment involving administering a therapeutically effective amount.

3. Claim Interpretation and Scope

The claims are constructed to balance claim breadth with enforceability:

  • The chemical claims aim to encompass all molecular variants within the defined structural class, ensuring coverage of analogs or derivatives.
  • Method claims are structured to cover various routes of administration, dosages, and treatment cycles.
  • Claims may include "wherein" clauses to specify particular features, which can limit scope but enhance robustness against design-arounds.

Patent Landscape Analysis

1. Prior Art and Patent Family

The '744 patent exists within a landscape populated by earlier patents on similar therapeutic classes, such as U.S. patents in the DMD (Duchenne Muscular Dystrophy) or kinase inhibitor space. However, its unique structural features or treatment approaches constitute novel aspects, overcoming prior art hurdles.

The patent family extends globally, with counterparts filed in the European Patent Office (EPO), Japan, and China, providing territorial exclusivity.

2. Competitive Patents

Competitors often hold patents on alternative compounds or delivery methods. For instance:

  • The patent landscape includes prior art related to similar compounds for related indications.
  • Recent filings might challenge or carve out narrow sub-classes, creating freedom-to-operate (FTO) considerations.
  • Orphan drug designations and data exclusivity periods further influence the commercial landscape.

3. Potential Patent Challenges and Freedom to Operate (FTO)

Given the molecular scope, patent validity may hinge on non-obviousness in view of prior art, as well as inventive step due to the specific structural modifications. Competitors may seek to design around the patent by altering substituents or using different pharmacokinetic properties.

The patent's robustness is supported by detailed specification disclosures and functional claims, which can withstand legal scrutiny.

4. Litigation and Enforcement

While no known litigations directly involve the '744 patent to date, similar patents in this therapeutic area are routinely litigated for infringement or validity challenges, especially during commercialization phases.


Implications for Industry Stakeholders

1. For Patent Owners

  • The broad chemical and method claims confer significant control over the therapeutic space.
  • Strategic enforcement can maximize licensing revenue and mitigate infringement risks.
  • Continuous R&D should explore variations outside the scope to maintain innovation exclusivity.

2. For Competitors

  • Careful analysis of claim language points to potential design-around strategies.
  • Monitoring of patent family extensions informs FTO assessments.
  • Alternative delivery methods or modified compounds might evade infringement.

3. For Licensing and Collaboration

  • The patent’s scope offers opportunities for licensing agreements, co-development, or strategic partnerships.
  • Clear understanding of claim boundaries facilitates negotiation leverage.

Conclusion

U.S. Patent No. 8,940,744 encapsulates a strategic combination of compound innovation, formulation, and therapeutic methods, with claims structured to provide broad yet defensible protection. Its comprehensive scope covers various molecular embodiments and treatment protocols, positioning it as a valuable asset within its targeted pharmaceutical space.

The patent landscape surrounding the '744 patent emphasizes active competition and ongoing vigilance. Stakeholders must continuously evaluate prior art, legal challenges, and technological advancements to maintain competitive advantage.


Key Takeaways

  • The '744 patent’s claims encompass a broad class of chemical compounds, formulations, and therapeutic methods, securing extensive market control.
  • Strategic claim drafting combines broad structural and method claims, balanced with detailed dependent claims to withstand prior art scrutiny.
  • The patent landscape in this space is dynamic; competitors are exploring design-arounds and advancing alternative therapies.
  • Patent owners should craft vigilant enforcement and licensing strategies, leveraging the patent’s scope and territorial protections.
  • Continuous innovation and patent family expansion are critical to sustain exclusivity and market dominance.

FAQs

1. What distinguishes U.S. Patent No. 8,940,744 from earlier patents?
The '744 patent introduces novel chemical structures and therapeutic methods not disclosed or suggested in prior art, characterized by specific structural modifications and treatment protocols that confer unexpected efficacy, thus satisfying inventive step requirements.

2. How broad are the chemical claims in this patent?
The claims cover a defined class of compounds with particular core structures and substituents, aimed at capturing all relevant analogs within this molecular family, thus providing substantial exclusivity over similar compounds.

3. Can competitors develop similar treatments without infringing this patent?
Potentially, if they design compounds or methods that fall outside the scope of the claims—such as altering core structures, substituents, or treatment approaches—while maintaining therapeutic efficacy.

4. How does this patent impact the global market?
Extending filings to jurisdictions like Europe, Japan, and China via the patent family ensures territorial protection, enabling global licensing and commercialization strategies.

5. What legal risks are associated with this patent?
Risk factors include validity challenges based on prior art, infringement litigation, and potential design-around developments. Regular patent landscape monitoring mitigates these risks.


References

[1] U.S. Patent No. 8,940,744.
[2] Patent family filings and prosecution documents (publicly accessible via USPTO and international patent databases).
[3] Industry reports on therapeutic compounds in the same class.

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Drugs Protected by US Patent 8,940,744

Applicant Tradename Generic Name Dosage NDA Approval Date TE Type RLD RS Patent No. Patent Expiration Product Substance Delist Req. Patented / Exclusive Use Submissiondate
Genzyme Corp WAYRILZ rilzabrutinib TABLET;ORAL 219685-001 Aug 29, 2025 RX Yes Yes ⤷  Get Started Free ⤷  Get Started Free Y Y METHOD OF TREATMENT OF ADULT PATIENTS WITH PERSISTENT OR CHRONIC IMMUNE THROMBOCYTOPENIA (ITP) WHO HAVE HAD AN INSUFFICIENT RESPONSE TO A PREVIOUS TREATMENT ⤷  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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