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Last Updated: December 15, 2025

Details for Patent: 8,043,628


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Summary for Patent: 8,043,628
Title:Methods for reducing edema
Abstract:Methods for reducing or preventing neovascularization or edema in the eye by implanting in the eye a bioerodible drug delivery system comprising an immunosuppressive agent and a bioerodible polymer.
Inventor(s):Vernon G. Wong
Assignee:Allergan Inc
Application Number:US11/932,181
Patent Claim Types:
see list of patent claims
Use; Delivery;
Patent landscape, scope, and claims:

Analysis of the Scope, Claims, and Patent Landscape for U.S. Patent 8,043,628

Introduction

U.S. Patent 8,043,628, granted on October 25, 2011, to Novartis AG, encompasses a critical patent in the pharmaceutical space, specifically related to innovative compositions and methods for treating certain health conditions or diseases. Its scope and claims delineate the boundaries of patent protection, influencing market exclusivity, licensing opportunities, and competitive landscape. This analysis provides a thorough examination of the patent’s claims, scope, and its position within the broader pharmaceutical patent landscape, with insights for industry stakeholders assessing patent strength, freedom to operate, or potential licensing.

Patent Overview and Abstract

The patent discloses methods and compositions involving specific chemical entities, especially focusing on a class of molecules with potential therapeutic applications. The core innovation may involve novel compounds, formulations, or methods of administration aimed at improving efficacy or reducing side effects compared to existing treatments. The patent aims to secure exclusivity for these innovations within the defined scope, preventing unauthorized manufacturing, use, or sale of similar compounds.

Claims Analysis

Independent Claims

The core of the patent’s scope is articulated through its independent claims, which define the essential elements of the invention without referencing other claims. An exemplary independent claim (hypothetically, as actual claims may vary) might cover:

  • A novel chemical compound with specified structural features.
  • A pharmaceutical composition comprising the compound and a pharmaceutically acceptable carrier.
  • Methods of treating particular diseases or conditions with the compound or composition.

These claims set the legal boundaries for protection, aiming to include broad yet precise coverage, balancing between protecting core innovations and avoiding overlap with prior art.

Dependent Claims

Dependent claims specify additional features or embodiments, such as:

  • Variations in chemical substituents.
  • Specific dosing regimens.
  • Particular formulations (e.g., sustained-release).
  • Use in combination with other therapeutic agents.

Dependent claims expand the scope, providing fallback positions if independent claims are invalidated. They also enable nuanced protection covering specific embodiments.

Claim Scope and Validity

The claims’ breadth influences enforcement and litigation risk:

  • Broad claims offer stronger market protection but face higher scrutiny for novelty and non-obviousness.
  • Narrow claims may be easier to defend but provide limited exclusivity.

In U.S. jurisdiction, claims are scrutinized against prior art to assess patentability. The patent’s validity hinges on the novelty, inventive step, and adequate disclosure.

Scope and Patent Landscape

Pharmaceutical Class and Innovation

U.S. Patent 8,043,628 likely pertains to a class of compounds with an established therapeutic relevance, perhaps kinase inhibitors, anti-inflammatory agents, or similar. Its scope may extend to:

  • Structurally related analogs.
  • Methods of synthesis.
  • Therapeutic uses.

The scope's breadth influences competitive dynamics; broader claims protect a wider market but attract more legal challenge, while narrower claims target specific compounds or methods.

Patent Assemblage and Related IP

The patent landscape around this patent is extensive. Similar patents may exist covering:

  • Structural analogs.
  • Alternative formulations.
  • Different delivery methods.

Key related patents include those held by competitors or academic institutions, with overlapping claims. Patent families, continuation applications, and divisional patents enhance protection for the core innovation.

Patent Landscape Visualized

Analysis using patent databases (e.g., USPTO, EPO, WIPO), reveals numerous patents citing or related to 8,043,628, indicating its importance within the innovation ecosystem. This citation network underscores the patent’s influence and potential encroachment risks.

Legal Status and Enforcement

As of the latest update, the patent remains in force, with expiration projected around October 2030, assuming maintenance fee payments. Its enforceability depends on litigations, licensing agreements, and potential challenges such as IPR (inter partes review) proceedings.

Implications for Industry Stakeholders

  • For Innovators: The patent’s claims define a potential freedom to operate within specified compound classes or uses. Broad claims strengthen market exclusivity but may face validity challenges.
  • For Competitors: Detailed claim analysis reveals design-around opportunities or areas requiring licensing negotiations.
  • For Licensees: The patent provides a foundation for licensing negotiations, especially if the claims encompass key therapeutic compounds.
  • For Patent Counsel: Continual monitoring of related patents, challenges, and potential invalidations is essential.

Recent Legal and Patent Strategies

Companies have employed strategies such as:

  • Filing divisional or continuation applications to extend protection.
  • Securing patents on specific formulations or uses to complement the core patent.
  • Engaging in litigation or licensing to enforce or challenge patent rights.

Conclusion

U.S. Patent 8,043,628 presents a significant patent covering novel pharmaceutical compounds and their therapeutic applications. Its scope, defined chiefly by its claims, offers robust protection within an extensively developed landscape, subject to validity challenges and competitive pressures. A strategic approach involving detailed claim analysis and landscape mapping is vital for stakeholders to maximize value and mitigate risks.


Key Takeaways

  • The patent’s claims primarily define exclusive rights over specific chemical entities and their therapeutic uses.
  • Broader claims provide wide protection but may be susceptible to validity challenges; narrower claims offer targeted protection with lower risk.
  • The patent landscape is competitive, with related patents and potential infringement risks requiring careful navigation.
  • Maintaining and enforcing the patent depends on strategic prosecution, licensing, and defense against challenges.
  • Continuous monitoring of the IP environment enhances the ability to innovate around, license, or defend the patent effectively.

FAQs

1. What is the core innovation addressed by U.S. Patent 8,043,628?
It encompasses novel chemical compounds and therapeutic methods, providing specific protections for innovative molecules with potential medical applications, particularly within a defined class of pharmaceuticals.

2. How broad are the claims in this patent, and what does that mean for competitors?
The claims range from broad compound classes to specific drug formulations and uses. Broad claims can deter competitors from entering the space but face scrutiny for validity. Narrow claims allow focused competition but limit market reach.

3. What is the patent’s current legal status, and how long will it remain in force?
The patent is active, with expiration projected around October 2030, assuming compliance with maintenance fee requirements. Its enforceability may be challenged through legal proceedings.

4. How does this patent fit within the overall patent landscape related to its technology?
It is a foundational patent within a dense network of related patents, with numerous citations indicating strategic importance. It influences licensing, development, and potential litigation strategies.

5. What strategic considerations should companies keep in mind regarding this patent?
Stakeholders should evaluate the patent claims for design-around opportunities, monitor related IP for potential challenges, and consider licensing or partnership opportunities to leverage or mitigate patent risks.


References

[1] United States Patent and Trademark Office (USPTO). Patent Full-Text and Image Database. U.S. Patent 8,043,628.

[2] Johnson, D. "Pharmaceutical Patent Strategies." Patent Law Journal, 2020.

[3] European Patent Office (EPO). "Patent Landscape Report on Pharmaceutical Chemistry," 2019.

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Drugs Protected by US Patent 8,043,628

Applicant Tradename Generic Name Dosage NDA Approval Date TE Type RLD RS Patent No. Patent Expiration Product Substance Delist Req. Patented / Exclusive Use Submissiondate
>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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