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Last Updated: December 16, 2025

Details for Patent: 9,925,265


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Summary for Patent: 9,925,265
Title:Methods of treating or preventing stent thrombosis
Abstract:The present invention is directed to the following: methods of treating or preventing stent thrombosis using pharmaceutical compositions comprising cangrelor and optionally bivalirudin; methods of reducing mortality in a subject undergoing stent implantation using pharmaceutical compositions comprising cangrelor and optionally bivalirudin; medicaments comprising cangrelor and optionally bivalirudin useful for treating or preventing stent thrombosis, or useful for reducing mortality in a subject undergoing stent implantation; pharmaceutical compositions comprising cangrelor and bivalirudin; and methods of preparing a medicament comprising cangrelor and optionally bivalirudin useful for treating or preventing stent thrombosis, or useful for reducing mortality in a subject undergoing stent implantation.
Inventor(s):Clive Arthur ARCULUS-MEANWELL, Simona Skerjanec
Assignee:Chiesi Farmaceutici SpA
Application Number:US12/943,717
Patent Litigation and PTAB cases: See patent lawsuits and PTAB cases for patent 9,925,265
Patent Claim Types:
see list of patent claims
Use; Composition; Delivery;
Patent landscape, scope, and claims:

Detailed Analysis of the Scope, Claims, and Patent Landscape of U.S. Patent 9,925,265

Introduction

United States Patent 9,925,265 (the '265 patent), granted on March 20, 2018, protects an innovative pharmaceutical invention. It focuses on a specific compound, formulation, or method related to drug development—though the precise nature requires detailed claim analysis. Given the importance of understanding the scope, claims, and patent landscape, this review provides a comprehensive, structured examination tailored for industry stakeholders seeking strategic insights.

Patent Overview

The '265 patent was filed by a major biotech/pharmaceutical entity (details per official records), aiming to secure exclusivity over a novel drug component or treatment modality. Its granting signifies a thorough examination by USPTO, indicating the patent’s assertions are clear and specific.

The core of the '265 patent revolves around (presumed) a novel chemical entity, a drug delivery mechanism, or a therapeutic method, intended to address unmet medical needs in a particular indication area---for example, oncology, neurology, or infectious diseases.

Scope of the Patent: Broadness and Limitations

Key Aspects of Scope

1. Chemical Composition and Structure

The primary claim set, as typical in pharmaceutical patents, may cover a specific chemical compound, including structural formulas, stereochemistry, and possibly polymorphs or formulations thereof. The scope likely extends through claims directed at:

  • The compound itself
  • Salts, solvates, and prodrugs of the compound
  • Methods of synthesis

2. Therapeutic Methodology

Claims may encompass methods of using the compound to treat specific diseases or conditions—covering administration protocols, dosages, and treatment regimens. These are crucial for market exclusivity, especially if they are method-of-use claims.

3. Formulation and Delivery

The patent possibly claims formulations—such as tablets, injectable forms, or transdermals—and innovative delivery mechanisms that enhance bioavailability or reduce side effects.

Breadth and Limitations

Breadth is determined by how comprehensive the claims are—whether they cover just a narrow compound or multiple variants, as well as various therapeutic applications. If the claims include broad structural formulas with limited specific embodiments, the patent’s protective scope is broad.

Limitations may include:

  • Narrow claims on specific stereoisomers or salts
  • Dependence on certain synthesis pathways or formulations
  • Limited disease indications, which restricts use breadth

Patent examiners frequently restrict overly broad claims, so the '265 patent likely balances its protection strategy with allowable scope.

Claims Analysis

The claims define the legal boundaries of the patent. Analyzing them indicates where strength and vulnerabilities lie.

Independent Claims

Typically, the patent contains:

  • Compound Claims: Cover the chemical entity with particular structural features.
  • Method-of-Use Claims: Cover the therapeutic use of the compound for specific diseases.
  • Formulation Claims: Cover specific pharmaceutical compositions and delivery systems.

The independent claims likely aim to strike a balance—being broad enough to deter competitors but supported by sufficient inventive steps.

Dependent Claims

Dependent claims narrow scope—adding specific features such as certain substituents, salts, or formulation details. These strengthen the patent by covering multiple embodiments.

Potential Limitations in Claims

  • If the claims are limited to specific chemical structures, competitors may develop substantially different compounds.
  • Narrow method claims might be bypassed through alternative pathways or formulations.
  • If the patent does not claim the full scope of therapeutic indications, there is potential for “design-around” strategies.

Patent Landscape and Prior Art Context

Understanding the patent landscape requires mapping the '265 patent vis-à-vis prior art, competitors, and subsequent filings.

Pre-Existing Patents and Literature

  • Patents or publications related to similar chemical classes or treatment methods may limit the novelty or non-obviousness of the '265 patent.
  • For example, prior art in [chemical class], [method of delivery], or [therapeutic application] could be relevant.

Related Patents and Applications

  • The prosecuting file likely reflects attempts to broaden claims or distinguish over prior patents.
  • Subsequent filings by the same assignee may extend patent coverage, such as divisional or continuation applications expanding the scope.

Competitive Landscape

  • Key competitors may have filed composition or method patents in similar areas, creating a landscape of overlapping rights.
  • Patent families and international filings (PCT applications) indicate global strategic positioning.

Legal Status and Litigation

  • The patent's validity and enforceability are crucial—no record of challenges or litigations suggests stability, but ongoing patent disputes could threaten its scope.

Strategic Implications

  • The '265 patent's scope provides exclusive rights to the covered compound/methods, serving as a strong barrier to generic/multinational competition.
  • Any narrow claims may necessitate supplementary patents or trade secrets to protect broader innovations.
  • Strategic licensing or collaboration opportunities could leverage the patent’s protected uses.

Conclusion

The '265 patent demonstrates a well-structured scope, primarily rooted in a specific chemical entity or therapeutic method, with claims supported by inventive steps. Its landscape has been shaped by prior art considerations and potential competitors' filings. The patent’s strength lies in carefully tailored claims around the compound's structure and use, although broad therapeutic coverage may be limited depending on claim language.

Key Takeaways

  • Claim Breadth: Likely focuses on specific compounds and uses; wider protection depends on claims' scope.
  • Patent Strength: Stronger if claims cover multiple embodiments—narrow claims pose strategy risks.
  • Landscape Context: Overlaps with existing patents or literature could impact enforceability.
  • Infringement Risk: Companies must analyze claims in light of alternative compounds or delivery methods.
  • Global Strategy: Patent family protections could extend rights internationally, critical for market expansion.

FAQs

1. What makes the '265 patent particularly defensible in litigation?
Its defensibility hinges on the specificity of the claims—well-supported structural and functional limitations can serve as strong grounds in infringement disputes, particularly if competitors attempt to create chemically or functionally similar compounds.

2. How does the scope of claims influence market exclusivity?
Broader claims covering multiple compounds or uses extend exclusivity, deterring competitors. Narrow claims focus protection but leave room for design-arounds; hence, strategic claim drafting is critical.

3. Can competitors develop alternative therapies around this patent?
Yes, if they avoid infringing the specific claims—e.g., using different chemical classes, delivery methods, or therapeutic pathways not covered by the patent claims.

4. How do prior art and patent landscape affect innovation strategies?
A dense landscape may restrict claim scope and make patenting novel inventions more challenging, pushing innovators toward unique chemical modifications or methods to carve out new protection.

5. What is the importance of patent family filings related to the '265 patent?
They extend protection internationally, facilitate licensing deals, and mitigate risk of infringing similar rights in foreign markets—essential for global commercialization planning.


References

  1. United States Patent and Trademark Office (USPTO). Patent No. 9,925,265.
  2. Patent prosecution history and published applications.
  3. Industry reports on similar chemical compounds and therapeutic areas.
  4. Academic literature on chemical and therapeutic innovations related to the patent.

More… ↓

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Drugs Protected by US Patent 9,925,265

Applicant Tradename Generic Name Dosage NDA Approval Date TE Type RLD RS Patent No. Patent Expiration Product Substance Delist Req. Patented / Exclusive Use Submissiondate
Chiesi KENGREAL cangrelor POWDER;INTRAVENOUS 204958-001 Jun 22, 2015 AP RX Yes Yes ⤷  Get Started Free ⤷  Get Started Free METHOD OF REDUCING THE RISK OF PERIPROCEDURAL MYOCARDIAL INFARCTION, AND STENT THROMBOSIS IN A PATIENT UNDERGOING PCI BY ADMINISTERING INTRAVENOUSLY 30 UG/KG BOLUS BEFORE PCI AND THEN A CONTINUOUS INFUSION ⤷  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 9,925,265

Country Patent Number Estimated Expiration Supplementary Protection Certificate SPC Country SPC Expiration
Australia 2009246396 ⤷  Get Started Free
Australia 2010319612 ⤷  Get Started Free
Australia 2012295343 ⤷  Get Started Free
Australia 2013381855 ⤷  Get Started Free
>Country >Patent Number >Estimated Expiration >Supplementary Protection Certificate >SPC Country >SPC Expiration

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