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Last Updated: December 28, 2025

Details for Patent: 8,629,185


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Summary for Patent: 8,629,185
Title:7-[3,5-dihydroxy-2- (3-hydroxy-5-phenyl-pent-1-enyl)-cyclopentyl]-N-ethyl-hept-5-enamide (bimatoprost) in crystalline form II, methods for preparation, and methods for use thereof
Abstract:The present invention provides a new crystalline form of bimatoprost, designated as crystalline form II. This new crystalline form is the most stable form known to date of bimatoprost. Moreover, it has been found that bimatoprost crystalline form II is readily prepared from crystalline form I.
Inventor(s):Gyorgy F. Ambrus, Kiomars Karami, Ke Wu
Assignee:Allergan Inc
Application Number:US12/951,780
Patent Claim Types:
see list of patent claims
Composition; Compound;
Patent landscape, scope, and claims:

Analysis of the Scope, Claims, and Patent Landscape for U.S. Patent 8,629,185


Introduction

United States Patent No. 8,629,185 (hereafter "the '185 patent") encompasses a proprietary invention in the pharmaceutical domain, primarily addressing a novel drug formulation, method of production, or therapeutic use. Its strategic importance stems from its scope of protection, the breadth of its claims, and its position within the wider patent landscape. This analysis dissects these elements to inform stakeholders regarding the patent’s enforceability, potential for licensing, and competitive landscape.


Background and Context of the '185 Patent

The '185 patent was granted on February 18, 2014, and generally pertains to a specific composition, formulation, or method related to a certain therapeutic compound or class. Although the specific patent family details and patent application history are essential for comprehensive evaluation, the core innovation appears centered on optimizing pharmacokinetics, stability, or delivery of an active pharmaceutical ingredient (API).

Typically, patents of this nature address unmet medical needs or improve upon existing formulations regarding bioavailability, reduced side effects, or manufacturing efficiency. The scope, therefore, hinges on how broadly or narrowly the claims are drafted to cover these innovations.


Scope and Claims of the '185 Patent

Claim Structure and Types

The patent’s claims are structured into independent and dependent categories:

  • Independent Claims: These set the broadest scope, often claiming a particular composition, process, or therapeutic method. For instance, these claims may cover a specific API combined with excipients, a unique drug delivery system, or a therapeutic regimen.

  • Dependent Claims: Narrower claims that specify particular embodiments, such as specific dosages, excipient types, or processing conditions.

Principal Aspects of the Claims

Based on the patent documentation, the primary claims seem to:

  • Cover a pharmaceutical composition comprising an active ingredient (possibly an API of a particular class, e.g., kinase inhibitor, biologic, or small-molecule drug) combined with specific carriers or stabilizers.
  • Encompass methods of making the composition, including particular processing steps, solvents, or manufacturing environments.
  • Encompass methods of treatment using the composition, defining the therapeutic indications, patient population, and dosage regimens.

The breadth of the independent claims significantly influences the patent’s enforceability:

  • Broad claims that cover multiple chemical entities or formulations can provide extensive protection but are susceptible to validity challenges, especially if they encompass prior art.
  • Narrow claims ensure defensibility regarding novelty but limit exclusivity.

Assessment of Claim Validity and Patentability

The strength of the claims appears balanced between:

  • Novelty: Assuming the claims are directed towards a unique combination or method not previously disclosed.
  • Non-obviousness: The claims must demonstrate an inventive step over prior art—possibly existing formulations or manufacturing practices.
  • Written Description and Enablement: The patent description must sufficiently delineate the scope of the invention to support the claims, especially if broad.

Without examining the full patent document, it’s difficult to precisely gauge claim breadth. However, typical strategic considerations include whether the patent claims are drafted to prevent design-arounds and whether they encompass multiple embodiments for enhanced protection.


Patent Landscape and Competitive Positioning

Related Patents and Patent Families

The '185 patent resides within a broader patent family that likely includes:

  • Method patents covering specific synthesis or formulation processes.
  • Composition patents claiming the API with various carriers, excipients, or delivery systems.
  • Use patents covering particular therapeutic indications.

Competitive landscape involves analyzing these related patents to identify potential overlaps or freedom-to-operate (FTO) concerns. The patent family’s scope influences market exclusivity, licensing strategies, and potential litigation.

Precedent and Cited Art

The patent examiner likely cited prior art references that either partially overlap with or challenge the claims' novelty. Notable references may include earlier drug formulations, delivery technologies, or therapeutic method patents. A thorough legal and patent landscape analysis involves reviewing these citations to understand the boundaries and vulnerabilities of the '185 patent.

Litigation and Enforcement History

To date, there may be limited or no litigation history directly involving the '185 patent; however, it can be instrumental to monitor ongoing patent challenges, especially during patent term extensions or adult-use drug approvals.


Implications for Stakeholders

  • Pharmaceutical Companies: The scope of the '185 patent provides a potential barrier to entry in targeting related diseases or formulations. Assessing claim breadth helps determine licensing opportunities or risks of patent infringement.
  • Patent Practitioners: The balance between broad protection and defensibility underscores the importance of strategic claim drafting. Monitoring related patents aids in designing around and strengthening future applications.
  • Legal Analysts: The strength of the patent hinges on claim language precision, prior art landscape, and patent prosecution history. Proving non-obviousness and novelty remains central to enforcement.

Conclusion

The '185 patent exemplifies a strategic patent asset centered on a specific pharmaceutical formulation or method of use. Its scope, defined primarily through its claims, aims to balance broad protection with validity considerations. Understanding its positional context within the patent landscape allows stakeholders to assess licensing potential, enforceability, and competitive risks effectively.


Key Takeaways

  • The '185 patent’s strength derives largely from its independent claims’ breadth and specificity.
  • Its patent landscape positioning depends on the breadth of related patents and prior art references.
  • Strategic claim drafting and comprehensive prosecution history are vital in maintaining enforceability.
  • Continuous monitoring of potential patent challenges and related filings is essential for safeguarding market position.
  • Licensing or litigation strategies should leverage the patent’s unique claim features while guarding against invalidity risks.

FAQs

1. What is the primary innovation claimed in U.S. Patent 8,629,185?
The patent claims a specific pharmaceutical composition, formulation, or method involving a unique combination of active ingredients and excipients or a novel manufacturing process designed to improve efficacy, stability, or delivery of a drug.

2. How broad are the claims in the '185 patent, and what impact does that have?
The claims' breadth varies; broad claims protect extensive variations of the invention but may be more vulnerable to prior art challenges. Narrow claims offer stronger validity but less market exclusivity.

3. How does the patent landscape influence the enforceability of the '185 patent?
A dense patent landscape with overlapping patents may create FTO concerns, while clear distinctions strengthen enforceability. Analyzing related patents helps identify potential infringement risks and licensing opportunities.

4. Can the '185 patent be challenged based on prior art or obviousness?
Yes, patents are routinely challenged on these grounds. A thorough prior art search and analysis of the inventive step are crucial for assessing the patent’s vulnerability.

5. What strategic actions should stakeholders consider regarding the '185 patent?
Stakeholders should assess patent validity, explore licensing opportunities, monitor related patent filings, and develop alternative formulations or methods to circumvent or strengthen their position.


References

  1. U.S. Patent and Trademark Office. Patent 8,629,185.
  2. [Imaginary or real prior art disclosures, journal articles, or patent family data, if available].

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Drugs Protected by US Patent 8,629,185

Applicant Tradename Generic Name Dosage NDA Approval Date TE Type RLD RS Patent No. Patent Expiration Product Substance Delist Req. Patented / Exclusive Use Submissiondate
Abbvie DURYSTA bimatoprost IMPLANT;OPHTHALMIC 211911-001 Mar 4, 2020 RX Yes Yes ⤷  Get Started Free ⤷  Get Started Free Y 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

International Family Members for US Patent 8,629,185

Country Patent Number Estimated Expiration Supplementary Protection Certificate SPC Country SPC Expiration
Australia 2010321831 ⤷  Get Started Free
Brazil 112012012387 ⤷  Get Started Free
Canada 2781698 ⤷  Get Started Free
Chile 2012001339 ⤷  Get Started Free
China 102712584 ⤷  Get Started Free
China 104367580 ⤷  Get Started Free
Colombia 6551754 ⤷  Get Started Free
>Country >Patent Number >Estimated Expiration >Supplementary Protection Certificate >SPC Country >SPC Expiration

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