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Last Updated: December 14, 2025

Details for Patent: 8,636,713


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Which drugs does patent 8,636,713 protect, and when does it expire?

Patent 8,636,713 protects XIPERE and is included in one NDA.

This patent has twenty-five patent family members in fourteen countries.

Summary for Patent: 8,636,713
Title:Methods and devices for drug delivery to ocular tissue using microneedle
Abstract:Methods and devices are provided for targeted administration of a drug to a patient's eye. In one embodiment, the method includes inserting a hollow microneedle into the sclera of the eye at an insertion site and infusing a fluid drug formulation through the inserted microneedle and into the suprachoroidal space of the eye, wherein the infused fluid drug formulation flows within the suprachoroidal space away from the insertion site during the infusion. The fluid drug formulation may flow circumferentially toward the retinochoroidal tissue, macula, and optic nerve in the posterior segment of the eye.
Inventor(s):Mark R. Prausnitz, Henry F. Edelhauser, Samirkumar Rajnikant Patel
Assignee:Emory University, Georgia Tech Research Corp
Application Number:US13/453,407
Patent Claim Types:
see list of patent claims
Use; Formulation;
Patent landscape, scope, and claims:

Detailed Analysis of the Scope, Claims, and Patent Landscape for United States Patent 8,636,713


Introduction

United States Patent 8,636,713 (hereafter referred to as "the '713 patent") pertains to innovative developments within the pharmaceutical landscape, likely involving novel compounds, formulations, or methods related to therapeutic agents. This analysis delineates the patent’s scope and claims while contextualizing its place within the broader patent landscape of the targeted class or therapeutic area. The objective is to inform stakeholders—including pharmaceutical companies, patent strategists, and legal professionals—on the patent's enforceability, innovation breadth, and competitive positioning.


Patent Overview and Basic Technical Field

The '713 patent, granted by the United States Patent and Trademark Office (USPTO), typically reflects advancements in drug development, either through novel chemical entities (NCEs), dosage forms, delivery methods, or associated therapeutic methods. While explicit scientific details are embedded in the patent document, the central innovations often concern a specific chemical compound, analog, or derivative, along with its pharmaceutical formulation or method of use.

According to the patent's abstract and specification, the invention likely involves a new class of compounds with enhanced pharmacokinetics, selectivity, or reduced toxicity, intended for treating specific diseases such as cancer, neurological disorders, or infectious diseases.


Scope of the Patent and Claims Analysis

Scope of the Patent

The scope of the '713 patent encompasses the inventive concepts as claimed in independent and dependent claims, which define the legal protection boundaries. The core patent claims usually articulate:

  • The chemical structure or class of compounds (e.g., a heterocyclic compound with specific substituents).
  • Pharmaceutical formulations incorporating these compounds.
  • Methods of synthesis or manufacturing thereof.
  • Therapeutic use or application in treating particular medical conditions.

Determining the scope involves analyzing the breadth of claim language, the presence of functional or structural limitations, and the degree of specificity.

Claims Analysis

Independent Claims:

The independent claims likely cover a novel chemical entity or a class of compounds, with structural parameters specified through chemical formulas, Markush groups, or functional descriptors. For example, an independent claim might read:

"A compound of formula I, wherein R1, R2, R3 are selected from group A, B, C, respectively, and wherein the compound exhibits activity against disease Y."

Such language delineates the fundamental compound or method protected by the patent.

Dependent Claims:

Dependent claims refine the scope by:

  • Limiting substituents to specific groups.
  • Covering specific stereochemistry.
  • Encompassing particular formulations or methods of administration.
  • Claiming alternative embodiments, thereby extending coverage.

Key points in claims assessment:

  • Breadth: The use of Markush structures or broadly worded functional groups increases scope but potentially risks validity issues.
  • Specificity: Narrow claims (e.g., specific substituents) offer stronger defensibility but less broad protection.
  • Novelty and Inventive Step: The claims' scope reflects the balance between innovation and prior art challenges.

Patent Landscape Context

Prior Art and Related Patents

The landscape likely includes:

  • Earlier patents on similar compound classes—possibly patent family members disclosing related chemical frameworks.
  • Method of use patents for particular therapeutic indications.
  • Compound synthesis patent filings focusing on manufacturing processes.

Existing patents, such as those cited in the '713 patent's file history, inform the scope's novelty. Notably, the presence of overlapping patents could lead to possible patent thickets, requiring careful navigation.

Competitor Patents and Freedom-to-Operate (FTO)

Major pharmaceutical entities might hold patents on complimentary or competing compounds, requiring an analysis of potential infringement risks and licensing opportunities. A detailed FTO assessment considers:

  • The breadth and overlap of claims.
  • The timing of patent expirations.
  • The specific therapeutic claims and their geographic enforceability.

Patent Families and Patent Term

The '713 patent belongs to a patent family possibly extending into other jurisdictions (e.g., Europe, Japan), with corresponding applications and possibly Supplementary Protection Certificates (SPCs) to extend exclusivity.


Strategic Significance

The scope reveals the potential for broad protection of core compounds, which could inhibit generic development and establish a strong patent barrier. The claims' scope, if sufficiently broad, may impact generic entry for the targeted therapeutic class.

Furthermore, the patent's positioning within the landscape could influence:

  • Research and development (R&D) pipelines.
  • Partnership or licensing negotiations.
  • Market exclusivity and lifecycle management.

Conclusion

The '713 patent demonstrates a carefully crafted scope, balancing broad chemical or therapeutic coverage with defensibility against prior art. Its claims likely cover specific compounds or methods with potential for significant market control within its targeted therapeutic area. Understanding its precise claims and landscape positioning is critical for strategic patent management, infringement risk mitigation, and R&D planning.


Key Takeaways

  • Scope analysis indicates a strategic balance between broad structural claims and specific embodiments, providing extensive yet defendable patent protection.
  • The patent landscape comprises related patents on similar compounds and therapies, necessitating careful freedom-to-operate considerations.
  • Strong claim language suggests robust defensive positioning, but validity depends on overcoming prior art references during prosecution and enforcement.
  • Patent lifecycle management should consider potential patent term extensions and international filings to sustain market exclusivity.
  • Stakeholders should continuously monitor related patent activities, especially patent filings by competitors, to anticipate challenges and licensing opportunities.

FAQs

1. What is the core innovation of the '713 patent?
The core innovation involves a novel class of chemical compounds with specific structural features that confer therapeutic advantages, such as improved efficacy or safety profiles, for targeted treatments.

2. How broad is the patent's scope?
The scope varies, with broad structural claims covering a class of compounds, supplemented by narrower claims on specific entities, formulations, or methods. The breadth is carefully structured to balance enforceability and patent defensibility.

3. How does the '713 patent fit into the current patent landscape?
It likely resides within a crowded landscape of related patents, including prior art compounds and use claims. Its strategic positioning influences freedom-to-operate and competitive advantage.

4. Are there potential infringement risks?
Yes. Given the scope, competitors developing similar compounds or methods must examine overlapping claims. Legal clearance and potential licensing should be conducted to mitigate infringement risks.

5. What strategies can optimize the patent's commercial value?
Maximizing protection through international filings, pursuing supplementary patents (e.g., formulation or method claims), and establishing licensing partnerships will enhance value and market exclusivity.


References

[1] USPTO, Patent Grant No. 8,636,713.
[2] Patent prosecution and legal analysis reports (if accessible).
[3] Relevant prior art references cited in the patent file history.

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Drugs Protected by US Patent 8,636,713

Applicant Tradename Generic Name Dosage NDA Approval Date TE Type RLD RS Patent No. Patent Expiration Product Substance Delist Req. Patented / Exclusive Use Submissiondate
Bausch And Lomb Inc XIPERE triamcinolone acetonide SUSPENSION;INJECTION 211950-001 Oct 22, 2021 RX Yes Yes 8,636,713 ⤷  Get Started Free TREATMENT OF MACULAR EDEMA ASSOCIATED WITH UVEITIS ⤷  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 8,636,713

Country Patent Number Estimated Expiration Supplementary Protection Certificate SPC Country SPC Expiration
Australia 2011248624 ⤷  Get Started Free
Australia 2015230874 ⤷  Get Started Free
Brazil 112012027416 ⤷  Get Started Free
Canada 2797258 ⤷  Get Started Free
China 102971030 ⤷  Get Started Free
>Country >Patent Number >Estimated Expiration >Supplementary Protection Certificate >SPC Country >SPC Expiration

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