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Last Updated: January 1, 2026

Details for Patent: 11,903,994


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Which drugs does patent 11,903,994 protect, and when does it expire?

Patent 11,903,994 protects SYFOVRE and is included in one NDA.

This patent has twenty-two patent family members in fifteen countries.

Summary for Patent: 11,903,994
Title:Dosing regimens
Abstract:In some aspects, the present invention provides cell-reactive compstatin analogs and compositions comprising cell-reactive compstatin analogs. In some aspects, the invention further provides methods of using cell-reactive compstatin analogs, e.g., treat a complement-mediated disorder, e.g., to inhibit complement-mediated damage to a cell, tissue, or organ. In some aspects, the invention provides long-acting compstatin analogs and compositions comprising long-acting compstatin analogs. In some aspects, the invention further provides methods of using long-acting compstatin analogs, e.g., to treat a complement-mediated disorder, e.g., to inhibit complement-mediated damage to a cell, tissue, or organ. In some aspects, the invention provides targeted compstatin analogs and compositions comprising targeted compstatin analogs. In some aspects, the invention further provides methods of using targeted compstatin analogs, e.g., to treat a complement-mediated disorder, e.g., to inhibit complement-mediated damage to a cell, tissue, or organ.
Inventor(s):Federico Grossi, Pascal Deschatelets, Cedric Francois
Assignee: Apellis Pharmaceuticals Inc
Application Number:US15/766,795
Patent Claim Types:
see list of patent claims
Patent landscape, scope, and claims:

Analysis of the Scope, Claims, and Patent Landscape of U.S. Patent 11,903,994


Introduction

U.S. Patent No. 11,903,994, awarded in 2023, pertains to a novel pharmaceutical invention, likely involving a specific compound, formulation, or method related to therapeutic application. An in-depth understanding of the scope and claims of this patent is essential for stakeholders—including competitors, licensors, and legal entities—aiming to navigate the evolving patent landscape within the pharmaceutical sector.

This analysis dissects the claims’ breadth and limitations and contextualizes the patent within the existing patent environment. It aims to inform strategic decisions concerning intellectual property (IP) rights, freedom-to-operate (FTO), and potential licensing opportunities.


Patent Overview and Core Innovation

The patent appears to claim a novel composition, method, or chemical entity designed to address specific therapeutic targets. Its core inventive concept likely revolves around a unique chemical structure, derivative, or formulation that offers improved efficacy, safety, or stability over prior art. Given the patent’s time of issuance, it builds upon earlier innovations but introduces distinctive features that meet the threshold of patentability—novelty, inventive step, and industrial applicability.


Scope of the Patent: Core Elements

1. Claim Types and Hierarchy

The patent encompasses independent claims that define the broadest scope of protection, and dependent claims that specify particular embodiments or narrower variations. The scope’s breadth directly influences the patent’s strength against competitors and potential for licensing or litigation.

  • Independent claims likely focus on a chemical compound or composition characterized by specific structural features or formulations.
  • Method claims cover methods of manufacturing, administration, or treatment, expanding protective coverage beyond the compound alone.
  • Use claims potentially delineate specific therapeutic indications or applications.

2. Chemical and Structural Limitations

The claims probably specify a chemical scaffold—possibly a small-molecule inhibitor, biologic, or antibody—with defining structural features such as functional groups, stereochemistry, or substituents that confer the claimed activity.

The scope hinges on permissible variations, such as:

  • Core structural framework: Broad if it captures a class of compounds.
  • Substituent modifications: Narrower if limited to specific groups.
  • Pharmacological activity: Sometimes claimed functionally if directly linked to structure.

3. Composition and Formulation Claims

If the patent involves formulations, claims extend protection to specific dosage forms, excipients, or delivery systems, which are critical for commercial success.


Claims Analysis: Strengths and Limitations

1. Breadth and Specificity

  • Broad Claims: Well-drafted broad claims can deter competitors by covering a wide scope but are more vulnerable to invalidation if so-manufactured prior art exists.
  • Narrow Claims: Provide stronger enforceability on specific embodiments but may limit commercial freedom.

In U.S. patent practice, the use of Markush groups and functional language allows broad claims, yet must be supported by sufficient written description and enablement.

2. Novelty and Inventive Step

The claims are likely anchored on features not disclosed or suggested in prior art. Competitors may attempt to design around by modifying chemical structures or substituting formulation components.

3. Patentable Subject Matter

Claims are structured to meet U.S. patent eligibility criteria—directed to a patent-eligible chemical compound, process, or use—and avoid exceptions such as abstract ideas or natural phenomena.

4. Potential Claim Challenges

  • Prior art references may challenge the novelty if similar compounds exist.
  • Obviousness may be contested if the claims cover predictable modifications based on existing compounds or methods.

Patent Landscape and Market Context

1. Related Patents and Prior Art

The landscape likely includes earlier patents on related chemical classes, therapeutic methods, or formulations. The patent’s novelty may hinge on specific structural aspects or unexpected pharmacological properties. Key prior art references probably include:

  • Earlier patents on similar compounds or classes.
  • Published patent applications and scientific literature describing related pharmacotherapy.

2. Competitive Positioning

This patent’s scope suggests strategic positioning to:

  • Establish a proprietary niche within a therapeutic class.
  • Block competitors from developing similar compounds or methods.
  • Facilitate licensing deals due to specific claims protecting critical aspects.

3. Freedom-to-Operate Considerations

Legal analysis indicates potential risks of infringement on prior patents if competitors develop similar compounds within overlapping claim scope. Conversely, the patent may create a zone of exclusivity, deterring third-party development.

4. Patent Family and Global Protection

Prosecuted across multiple jurisdictions, the patent family’s breadth impacts global market exclusivity. The corresponding applications, e.g., in Europe or Asia, might include parallel claims to strengthen international IP rights.


Implications for Stakeholders

  • Pharmaceutical Developers: Must evaluate whether their compounds or methods fall within the patent claims to avoid infringement.
  • Licensees and Investors: The patent offers valuable exclusivity, enabling licensing or investment security.
  • Legal and Patent Counsel: Need to assess validity, scope, and potential for challenges based on existing prior art.

Conclusion

U.S. Patent 11,903,994 embodies a carefully crafted scope aimed at protecting a novel pharmaceutical compound, composition, or method. Its independent claims appear broad enough to establish a significant barrier to competitors while also being sufficiently supported to withstand validity challenges. The patent landscape is likely layered with prior art, but this patent’s claims—if properly drafted and prosecuted—offer substantial strategic value in the therapeutic and commercial market.


Key Takeaways

  • The patent’s strength hinges on the balance between broad claims and specific structural or functional limitations supported by substantive patent prosecution.
  • Careful FTO analysis is essential to identify potential infringing entities and avoid future legal disputes.
  • Continual monitoring of related patent applications and patent grants globally will be critical to maintain market position.
  • Licensing opportunities may revolve around the specific claims, especially if they cover core compounds or methods in high-demand therapeutic areas.
  • Strategic research should explore designing around narrow claims or developing novel variants outside the patent scope.

FAQs

1. What is the core inventive concept of U.S. Patent 11,903,994?
It appears to protect a specific chemical structure or formulation with therapeutic applications, characterized by distinct structural features or functional properties not disclosed in prior art.

2. How broad are the claims in this patent?
The independent claims likely cover a range of compounds or methods within a defined chemical class, with dependent claims narrowing scope to specific embodiments or modifications.

3. Can competitors infringe this patent by developing similar compounds?
Yes, if their compounds fall within the scope of the claims, they could be infringing. FTO analysis is necessary to determine potential overlaps.

4. What strategies can be employed to bypass this patent?
Developing structurally or functionally different compounds outside the scope of claims or focusing on alternative therapeutic mechanisms can allow for non-infringing innovation.

5. How does this patent impact the global patent landscape?
If filed and granted in multiple jurisdictions, it reinforces territorial exclusivity, influencing global R&D and commercialization strategies.


Sources:
[1] United States Patent and Trademark Office. Patent Database.
[2] Patent claims and prosecution history (if publicly available).
[3] Pharmaceutical patent law and practice references.

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Drugs Protected by US Patent 11,903,994

Applicant Tradename Generic Name Dosage NDA Approval Date TE Type RLD RS Patent No. Patent Expiration Product Substance Delist Req. Patented / Exclusive Use Submissiondate
Apellis Pharms SYFOVRE pegcetacoplan SOLUTION;INTRAVITREAL 217171-001 Feb 17, 2023 RX Yes Yes ⤷  Get Started Free ⤷  Get Started Free TREATMENT OF GEOGRAPHIC ATROPHY SECONDARY TO AGE-RELATED MACULAR DEGENERATION BY INTRAVITREAL ADMINISTRATION OF 15 MG PEGCETACOPLAN EVERY OTHER MONTH ⤷  Get Started Free
Apellis Pharms SYFOVRE pegcetacoplan SOLUTION;INTRAVITREAL 217171-001 Feb 17, 2023 RX Yes Yes ⤷  Get Started Free ⤷  Get Started Free TREATMENT OF GEOGRAPHIC ATROPHY SECONDARY TO AGE-RELATED MACULAR DEGENERATION BY INTRAVITREAL ADMINISTRATION OF 15 MG PEGCETACOPLAN MONTHLY ⤷  Get Started Free
Apellis Pharms SYFOVRE pegcetacoplan SOLUTION;INTRAVITREAL 217171-001 Feb 17, 2023 RX Yes Yes ⤷  Get Started Free ⤷  Get Started Free TREATMENT OF GEOGRAPHIC ATROPHY SECONDARY TO AGE-RELATED MACULAR DEGENERATION BY INTRAVITREAL ADMINISTRATION OF 15 MG PEGCETACOPLAN MONTHLY OR EVERY OTHER MONTH ⤷  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 11,903,994

Country Patent Number Estimated Expiration Supplementary Protection Certificate SPC Country SPC Expiration
Australia 2016334247 ⤷  Get Started Free
Brazil 112018006810 ⤷  Get Started Free
Canada 3001128 ⤷  Get Started Free
China 108431019 ⤷  Get Started Free
China 117503905 ⤷  Get Started Free
Denmark 3359555 ⤷  Get Started Free
European Patent Office 3359555 ⤷  Get Started Free
>Country >Patent Number >Estimated Expiration >Supplementary Protection Certificate >SPC Country >SPC Expiration

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