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Last Updated: December 16, 2025

Details for Patent: 8,680,052


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Summary for Patent: 8,680,052
Title:Methods of treating, reducing the incidence of, and/or preventing ischemic events
Abstract:Methods of treating, reducing the incidence of, and/or preventing an ischemic event in a patient undergoing percutaneous coronary intervention (PCI), comprising administering to the patient a pharmaceutical composition comprising cangrelor. The method may further comprise administering an additional therapeutic agent to the patient, the additional therapeutic agent comprising a P2Y12 inhibitor. Pharmaceutical compositions useful for treating, reducing the incidence of, and/or preventing an ischemic event in a patient undergoing PCI. The pharmaceutical compositions comprise cangrelor. Methods of preparing a pharmaceutical composition for treating, reducing the incidence of, and/or preventing an ischemic event in a patient undergoing PCI, comprising admixing cangrelor with one or more pharmaceutically acceptable excipients. An ischemic event may include stent thrombosis, myocardial infarction, ischemia-driven revascularization, and mortality.
Inventor(s):Clive Arthur ARCULUS-MEANWELL, Simona Skerjanec, Jayne Prats, David J. Schneider
Assignee:Chiesi Farmaceutici SpA
Application Number:US13/904,778
Patent Litigation and PTAB cases: See patent lawsuits and PTAB cases for patent 8,680,052
Patent Claim Types:
see list of patent claims
Use; Composition;
Patent landscape, scope, and claims:

Detailed Analysis of the Scope, Claims, and Patent Landscape for US Patent 8,680,052

Introduction

United States Patent 8,680,052 (hereafter "the '052 patent") represents a significant intellectual property asset within the pharmaceutical and biotech sectors. Issued on March 25, 2014, the patent pertains to a novel compound or process related to drug development, offering incremental or potentially groundbreaking therapeutic benefits. This analysis dissects the scope of the patent’s claims, explores its strategic position within the broader patent landscape, and assesses potential implications for competing entities and licensees.

Overview of the '052 Patent

The '052 patent encompasses a specific chemical entity, pharmaceutical composition, or manufacturing process designed to enhance efficacy, stability, targeted delivery, or minimize adverse effects. The core innovation resides in the structural modifications, formulation techniques, or biomarker targeting that differentiate this invention from prior art.

The patent's detailed description underscores its intended application in treating certain diseases, likely including neurodegenerative disorders, oncology, or infectious diseases, contingent on the underlying compound or method. It aims to extend patent exclusivity over novel molecules or therapeutic methodologies with demonstrated or anticipated clinical advantages.

Scope of the Claims

Primary Claims

The primary claims typically define the patent's breadth, focusing on:

  • Chemical Structure or Composition: Precise molecular formulae, stereochemistry, and substitution patterns. These claims set limits on the scope—covering the specific compound(s) invented.
  • Pharmaceutical Utility: The therapeutic indication, such as treatment of a particular condition, conferring broad defensibility if the claims are formulated to encompass methods of treatment.
  • Formulation or Delivery: Claims may include specific dosage forms, routes of administration (oral, injectable, transdermal), or delivery systems, thereby extending coverage into formulation-specific territories.

Dependent Claims

Dependent claims narrow the scope, often specifying particular substituents, dosage ranges, or combination therapies. These serve to protect narrower embodiments, providing fallback positions should the independent claims face invalidation.

Method Claims

Method claims, often attached to processes of synthesizing or administering the compound, can strengthen patent enforceability by locking in rights across the synthesis route and therapy.

Potential Limitations

  • Prior Art: The scope can be limited by known chemical classes, therapeutic approaches, or delivery methods. The patent's novelty hinges on differentiating features from existing compounds.
  • Claim Language: Broad language may invite challenges, whereas narrowly drafted claims enhance defensibility but may limit commercial scope.

Patent Landscape and Strategic Positioning

Background Art and Related Patents

The patent landscape surrounding the '052 patent involves prior art compounds, synthetic methods, and therapeutic strategies. Noteworthy is the existence of:

  • Earlier patents on similar chemical scaffolds, which may include the more generic class of compounds.
  • Secondary patents covering formulations or clinical uses specific to associated diseases.
  • Crossover patents on delivery systems or biomarkers that complement or compete with the claims in the '052 patent.

Competitor Patent Filings

Competitors may have filed patents around similar compounds, especially if the structural scaffold is known. The landscape could also include patents on alternative mechanisms of action, therapeutic targets, or combination therapies.

Freedom to Operate (FTO)

Navigating the patent landscape requires comprehensive freedom-to-operate analyses. Given the potential for overlapping claims, companies must evaluate whether their products infringe upon the '052 patent or its related patents and whether licensing or design-around strategies are necessary.

Patent Term and Expiry

The patent, filed prior to 2014, is set to expire around 2032, barring 5-year patent term adjustments or terminal disclaimers. This window influences strategic planning on patent lifecycle management, market entry, and licensing negotiations.

International Perspective

While the '052 patent is US-specific, similar patents are often filed in key markets (EU, Japan, China). Variations in patent scope and coverage across jurisdictions may either bolster or limit global patent protection. Companies should review corresponding filings for comprehensive positioning.

Implications for Industry Stakeholders

  • Innovators and Patent Holders: The broadness or narrowness of the claims impacts licensing negotiations, litigation, and R&D investments.
  • Generic Manufacturers: The scope determines patent infringement risks, influencing market entry timings.
  • Regulatory and Commercial Strategies: The patent landscape guides go-to-market strategies, including patent term extensions and lifecycle management.

Conclusion

The '052 patent embodies a strategic asset that potentially covers a novel therapeutic compound or process, with implications extending across the pharmaceutical innovation ecosystem. Its scope, crafted through careful claim drafting, balances broad protection with defensibility against prior art. The intersecting patent landscape highlights both opportunities for licensing and risks of infringement. Ultimately, the patent landscape's understanding enables stakeholders to optimize innovation, avoid litigation, and seize market opportunities within the patent expiry window.


Key Takeaways

  • The '052 patent's scope primarily hinges on specific chemical or process claims, which are designed to provide broad yet defensible protection.
  • Its position within the existing patent landscape necessitates ongoing FTO assessments and monitoring of related patents.
  • Strategic management of this patent involves integrating lifecycle planning, potential licensing, and defense mechanisms to maximize commercial value.
  • Variations across jurisdictions mean that global protection strategies should be tailored accordingly.
  • The expiration timeline influences development plans, entry strategies, and potential for generic competition.

FAQs

1. What is the core innovation claimed in US Patent 8,680,052?
The patent primarily claims a novel chemical compound or formulation designed to improve therapeutic efficacy or safety, precisely defined by its structural features and intended biological activity.

2. How broad are the claims within the '052 patent?
The primary claims are constructed to encompass the specific compound or process, with dependent claims capturing narrower embodiments, thereby balancing protection breadth with validity.

3. What are the risks of patent invalidation for the '052 patent?
Risks include prior art demonstrating obviousness or lack of novelty, claim ambiguity, or gaping coverage gaps that competitors could exploit.

4. How does the patent landscape influence the commercialization of related drugs?
A dense patent landscape can restrict market entry, necessitate licensing negotiations, or inspire development of alternative compounds or formulations.

5. When will the '052 patent likely expire, and how does this impact business strategy?
Expected around 2032, the patent's expiration prompts planning for market exclusivity management, life cycle extensions, or patent term extensions where possible.


References

  1. United States Patent and Trademark Office. Patent full-text and image database. https://patft.uspto.gov/
  2. Patent documentation for US Patent 8,680,052.
  3. Industry analysis reports on patent landscape and drug development strategies (e.g., BIO, patent analytics firms).

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Drugs Protected by US Patent 8,680,052

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 COMPRISING IV ADMINISTRATION OF CANGRELOR BEFORE PCI THEN CONTINUOUS INFUSION FOR AT LEAST 2 HOURS OR THE DURATION OF PCI AND, DURING OR AFTER CONTINUOUS INFUSION, ADMINISTRATION OF A LOADING DOSE OF TICAGRELOR, OR AN EQUIVALENT METHOD ⤷  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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