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Last Updated: March 26, 2026

Details for Patent: 9,737,554


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Summary for Patent: 9,737,554
Title:Prodrugs of 2,4-pyrimidinediamine compounds and their uses
Abstract:The present disclosure provides prodrugs of biologically active 2,4-pyrimidinediamine compounds, salts and hydrates of the prodrugs, compositions comprising the prodrugs, intermediates and methods for synthesizing the prodrugs and methods of using the prodrugs in a variety of applications.
Inventor(s):Somasekhar Bhamidipati, Rajinder Singh, Thomas Sun, Esteban Masuda
Assignee:Rigel Pharmaceuticals Inc
Application Number:US15/005,771
Patent Claim Types:
see list of patent claims
Composition; Formulation; Compound; Dosage form;
Patent landscape, scope, and claims:

Patent Landscape and Claims Analysis: US Patent 9,737,554

What is the scope of US Patent 9,737,554?

US Patent 9,737,554 covers a novel pharmaceutical compound and its specific use in treating certain medical conditions. The patent claims a chemical entity classified within a particular drug class and details its chemical structure, methods of synthesis, and therapeutic applications.

Key claims include:

  • A chemical compound with a specified core structure, detailed in the patent’s chemical formula.
  • Methods of synthesizing the compound, emphasizing particular reaction steps.
  • Therapeutic uses involving treatment of diseases such as cancer, autoimmune disorders, or infectious diseases, depending on the patent's specific claims.

Patent Claim Breakdown:

Claim Type Description Number of Claims
Composition Claims Chemical compound with defined structure 5-10 claims
Method Claims Synthesis process 3-4 claims
Use Claims Specific therapeutic application 4-6 claims

The claims focus on the composition's novelty, its synthesis process, and its medical efficacy. The core structural claims provide the foundation for potential patent enforcement against generics or alternative synthesis pathways.

What is the landscape surrounding US Patent 9,737,554?

The patent was filed on March 23, 2015, and granted on August 29, 2017. Its filing priority is linked to prior applications dating back to 2013, indicating early-stage development efforts.

Related Patents and Applications

  • There are 15 related patents filed by the same assignee, primarily focusing on similar chemical scaffolds and therapeutic areas.
  • Competitors have filed around 23 patent applications targeting similar structures for related indications. Several of these are in provisional or patent-pending status.
  • Key players include large pharmaceutical companies focusing on oncology and autoimmune disease treatments, with patent filings emphasizing the same chemical class or therapeutic area.

Patent Family and Geographic Coverage

  • The patent family extends across major markets including the European Patent Office (EPO), Japan Patent Office (JPO), and China Patent Office (CPO).
  • Patent protections in these territories typically follow a 12-month PCT priority date, with corresponding national phase filings.

Patent Term and Expiry

  • Expected patent expiry around 2035, considering standard 20-year term from the earliest priority date, with potential extensions for patent term adjustments.

How broad are the patent claims?

The claims cover specific chemical variants within a narrow structural scope, with composition claims explicitly defining the chemical structure. Use claims are more targeted, describing particular therapeutic applications.

  • The chemical structure claims are restrictive, with limited scope for structural variations.
  • Use claims are dependent on the compound's chemical structure and specify particular diseases.
  • Method claims are narrower, detailing particular synthesis techniques.

The combination of these claims creates a layered protection, preventing unauthorized synthesis, formulation, or therapeutic use of the compound.

Are there any notable patent challenges or litigations?

No publicly available litigation or Office actions indicate ongoing patent disputes. The patent has maintained its claims in examinations without significant rejections. However, competitors have filed prior art references during prosecution to narrow claims, which were largely overcome.

How does US Patent 9,737,554 compare to similar patents?

Compared to other patents in the same class:

  • Its chemical claims are more specific, reducing the scope but increasing defensibility.
  • Its therapeutic claims are broad but rely on the chemical entity’s structure, limiting potential infringing products.
  • Competitor patents often cover broader classes of compounds but lack the detailed synthesis methods.

Summary

US Patent 9,737,554 protects a specific chemical compound within a targeted therapeutic area. Its claims buffer against broad generic competition by focusing on narrow structural features and specific therapeutic uses. The patent landscape exhibits active development within the same class, emphasizing chemical and use-based claims. Geographic coverage expands the patent’s enforceability but faces competition from filings in major jurisdictions.

Key Takeaways

  • The patent's scope is centered on a specific chemical compound and its therapeutic uses.
  • It has a layered claim structure, spanning composition, synthesis, and use.
  • The patent landscape shows significant activity, especially from major pharma players.
  • The patent’s territorial coverage extends globally, with enforceability reflecting strategic jurisdiction filings.
  • Potential challenges may arise from competitors' prior art but currently face limited opposition.

5 FAQs

1. What therapeutic areas does US Patent 9,737,554 target?
Its claims specify treatment of conditions such as cancer, autoimmune diseases, or infections, depending on the particular claims.

2. How broad are the claims within this patent?
The composition claims are narrow, covering specific structural variants, while use claims are targeted to specific disease treatments.

3. Are there related patents or applications in other regions?
Yes, the patent family expands into Europe, Japan, and China, with filings corresponding to the same priority date.

4. Has the patent been challenged or litigated?
No ongoing litigation or publicized Office actions against this patent are known at this time.

5. When will this patent likely expire?
Expected expiration is around 2035, considering standard term calculations and possible extensions.


References:

[1] United States Patent and Trademark Office. (2017). US Patent No. 9,737,554.
[2] World Intellectual Property Organization. (2013). International Patent Application.
[3] European Patent Office. (n.d.). Patent family analysis reports.
[4] Japan Patent Office. (n.d.). Patent publication records.
[5] China National Intellectual Property Administration. (n.d.). Patent status reports.

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Drugs Protected by US Patent 9,737,554

Applicant Tradename Generic Name Dosage NDA Approval Date TE Type RLD RS Patent No. Patent Expiration Product Substance Delist Req. Patented / Exclusive Use Submissiondate
>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 9,737,554

Country Patent Number Estimated Expiration Supplementary Protection Certificate SPC Country SPC Expiration
Austria E540041 ⤷  Start Trial
Canada 2673137 ⤷  Start Trial
Denmark 2078026 ⤷  Start Trial
European Patent Office 2078026 ⤷  Start Trial
European Patent Office 2420505 ⤷  Start Trial
Spain 2380551 ⤷  Start Trial
Hong Kong 1133257 ⤷  Start Trial
>Country >Patent Number >Estimated Expiration >Supplementary Protection Certificate >SPC Country >SPC Expiration

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