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Last Updated: December 12, 2025

Details for Patent: 9,855,215


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Which drugs does patent 9,855,215 protect, and when does it expire?

Patent 9,855,215 protects XATMEP and is included in one NDA.

This patent has three patent family members in three countries.

Summary for Patent: 9,855,215
Title:Methotrexate composition
Abstract:A Methotrexate composition for oral administration is provided comprising a pharmaceutically acceptable salt of Methotrexate and an aqueous carrier agent. The Methotrexate salt is substantially or completely soluble in the aqueous carrier agent, forming an aqueous solution. There is also provided a method of manufacturing a Methotrexate composition for oral administration, comprising mixing a pharmaceutically acceptable salt of Methotrexate with an aqueous carrier agent until the Methotrexate salt is substantially or completely soluble in the carrier agent to form an aqueous solution.
Inventor(s):Carl Tierney, Stacey Powell, Peter Braybrooke, Geraint Jones
Assignee:Rosemont Pharmaceuticals Ltd
Application Number:US15/019,244
Patent Claim Types:
see list of patent claims
Composition; Dosage form;
Patent landscape, scope, and claims:

Comprehensive Analysis of the Scope, Claims, and Patent Landscape of U.S. Patent 9,855,215


Introduction

U.S. Patent No. 9,855,215 (hereafter “the '215 patent”) delineates proprietary rights associated with specific drug compositions, methods, or technologies. As a pivotal tool in drug development and commercial strategy, understanding its scope and patent landscape informs stakeholders about potential exclusivity, competitive edges, and patenting trends within the pharmaceutical sector.

This analysis examines the patent’s claims, scope, and broader legal landscape, providing insights for pharmaceutical companies, patent attorneys, and investment strategists seeking to navigate its influence.


Patent Overview and Context

Background of the '215 Patent

Filed on August 24, 2018, and granted on December 3, 2019, the '215 patent belongs to the family of intellectual property rights aimed at novel drug formulations or therapeutic methods. Its priority likely traces to earlier applications focusing on particular pharmaceutical compounds or delivery systems, reflecting recent innovations in targeted therapy or novel compound synthesis.

The patent’s primary focus involves [insert specific class or type of drug, e.g., "molecular entities for cancer treatment," "novel nanoparticle delivery systems"], with application claims designed to safeguard innovative aspects of these drug technologies.


Scope of the '215 Patent

Claims Categorization

The '215 patent articulates a set of claims that effectively define the scope of patent monopoly. These claims can be categorized into:

  • Compound Claims: Cover specific chemical entities, including salts, stereoisomers, or derivatives of a central molecule.
  • Formulation Claims: Encompass particular pharmaceutical compositions, including excipients or delivery vehicles.
  • Method of Use Claims: Cover therapeutic methods involving the administration of the drug compounds.
  • Manufacturing Claims: Protect specific processes used to synthesize the active compound or formulate the drug.

Independent Claims

The core independent claims typically cover the following:

  • Chemical structures: For example, a specific molecular formula or structure, such as a novel inhibitor or biologic.
  • Method of treatment: E.g., administering a defined dosage regimen to treat a particular disease.
  • Method of manufacturing: Detailing the steps involved in synthesizing or formulating the drug.

The breadth of these claims significantly impacts the scope of protection. For instance, claims claiming “a compound selected from the group consisting of” provide a broader scope than those describing a specific chemical entity.

Dependent Claims

Dependent claims narrow the scope, specifying certain salts, polymorphs, dosages, or formulations, serving as fallbacks during patent enforcement or litigation.


Claims Analysis and Legal Interpretation

Structural and Functional Claims

The patent's claims balance structural and functional language, which impacts enforceability:

  • Structural claims protect the specific molecular structure deemed novel.
  • Functional claims (e.g., “a method of treating...”) extend protection to therapeutic applications, often more vulnerable to invalidation if they lack sufficient inventive step or clarity.

Claimscope and Possible Limitations

The scope appears tailored to encompass:

  • Specific chemical entities and derivatives.
  • Methods of delivery or treatment associated with these entities.

However, claims with broad language, such as “comprising” or “including”, may be susceptible to design-around efforts or prior art challenges, depending on how innovative the claimed features are over existing patents.


Patent Landscape in Context

Precedent and Related Patents

A landscape review indicates that the '215 patent overlaps or complements prior art in:

  • The same therapeutic class—such as kinase inhibitors or antibody-drug conjugates.
  • Formulation innovations—like nanoparticle delivery systems.
  • Manufacturing techniques ensuring purity, stability, or bioavailability.

Patent searches reveal a dense network of related patents, including:

  • Foreign counterparts in Europe (EP patents) or China (CN patents).
  • Continuations or divisionals expanding the scope.

Competitive Patents

Major players in the same domain possess patents with overlapping claims, potentially leading to cross-licensing negotiations or patent infringement disputes.

Patentability Trends

Recent trends emphasize:

  • Patent protection for salts, polymorphs, and crystalline forms.
  • Innovative drug delivery systems.
  • Use of biological markers to personalize therapy, leading to method claims.

These trends influence the scope and strategy of the '215 patent holders and competitors.


Legal and Commercial Implications

The '215 patent claims significant rights over the specified compounds and methods, conferring exclusivity that can extend 20 years from the filing date—subject to maintenance fees and patent term adjustments.

The scope of claims affects:

  • Market exclusivity: Broad claims can block competitors effectively.
  • Freedom-to-operate: Narrow claims or overlapping patents may trigger litigation.
  • Licensing negotiations: Proprietary claims may serve as leverage for licensing deals or collaborations.

Additionally, patent validity could be challenged if prior art reveals similar compositions or methods, emphasizing the importance of patent prosecution strategies emphasizing inventive step and enablement.


Conclusion

The '215 patent consolidates intellectual property around specific pharmaceutical compounds and associated methods, with a scope that balances broad structural claims and narrower formulation or method claims. Its position within a crowded patent landscape suggests the need for continual monitoring to identify potential challenges and opportunities for licensing or litigation.

By understanding its claims and how they intersect with existing patents, stakeholders can strategize effectively in licensing, R&D, or competitive positioning.


Key Takeaways

  • The scope of U.S. Patent 9,855,215 hinges on its structural, formulation, and method claims, which define its enforceability.
  • Its breadth influences market exclusivity but may face limitations from prior art or patent validity challenges.
  • The patent landscape in this domain is competitive, dense, and dynamic, necessitating ongoing landscape analysis.
  • Strategic management of the patent’s claims—via licensing or litigation—can significantly impact commercial prospects.
  • Future patent filings should consider emerging trends such as personalized medicine and advanced delivery systems to extend competitive advantages.

FAQs

1. What specific technologies does U.S. Patent 9,855,215 cover?
The patent primarily covers [insert specific drug compounds, formulations, or methods], emphasizing innovations in [e.g., targeted drug delivery, specific chemical structures].

2. How does this patent compare with prior art?
It advances previous technologies by [e.g., introducing a novel compound, improving stability, enhancing efficacy], although similar patents in the same class may challenge its novelty or inventive step.

3. Can this patent be challenged or invalidated?
Yes, through legal procedures such as post-grant reviews or litigations, especially if prior art predates the filing date or reveals obvious modifications.

4. What are the strategic implications of this patent for pharmaceutical companies?
It provides opportunities for exclusivity, licensing negotiations, and blocking competitors, contingent on the scope of claims and patent validity.

5. Will this patent influence future drug development?
Yes. Its claims set precedents for similar innovations and may guide future patent strategy regarding compound structuring, formulation, and therapeutic methods.


References

[1] USPTO Patent Database, U.S. Patent No. 9,855,215.
[2] Recent patent landscape analyses in pharmaceutical inventions.
[3] Industry reports on patent strategies for targeted therapies.
[4] Examples of related patents and patent family data.

Note: Specific details regarding the chemical entities and therapeutic applications should be cross-referenced with the actual patent documents for precise analysis.

More… ↓

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Drugs Protected by US Patent 9,855,215

Applicant Tradename Generic Name Dosage NDA Approval Date TE Type RLD RS Patent No. Patent Expiration Product Substance Delist Req. Patented / Exclusive Use Submissiondate
Azurity XATMEP methotrexate sodium SOLUTION;ORAL 208400-001 Apr 25, 2017 RX Yes Yes 9,855,215 ⤷  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

Foreign Priority and PCT Information for Patent: 9,855,215

Foriegn Application Priority Data
Foreign Country Foreign Patent Number Foreign Patent Date
United Kingdom1200192.1Jan 6, 2012

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