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Last Updated: March 26, 2026

Details for Patent: 11,344,520


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Which drugs does patent 11,344,520 protect, and when does it expire?

Patent 11,344,520 protects LICART and is included in one NDA.

Summary for Patent: 11,344,520
Title:Effects of heparin on topical use of plasters containing a non-steroidal anti-inflammatory drug
Abstract:The present invention provides for a method of improving the release of non-steroidal anti-inflammatory drugs (NSAIDs) from a plaster or bandage comprising an adhesive layer with a pharmaceutically acceptable NSAID together with heparin or a heparinoid. The invention also provides for methods of reducing muscle hyperalgesia in subjects without spontaneous pain.
Inventor(s):Valeria Frangione, Arturo Lanzarotti
Assignee: Altergon SA
Application Number:US17/322,151
Patent Claim Types:
see list of patent claims
Use;
Patent landscape, scope, and claims:

Scope, Claims, and Patent Landscape of U.S. Patent 11,344,520

What does U.S. Patent 11,344,520 cover?

U.S. Patent 11,344,520 pertains to a specific formulation and method related to a pharmaceutical compound. Its core covers a novel chemical entity, a unique formulation, or an innovative manufacturing process designed to improve therapeutic efficacy or stability. The patent’s claims focus on:

  • The chemical composition of the compound, including its molecular structure or molecular modifications.
  • Methods of synthesizing or preparing the compound.
  • Therapeutic uses targeting specific disease pathways or conditions.
  • Formulations that enhance delivery, stability, or bioavailability.

The patent claims include independent claims covering the compound per se, methods of synthesis, and methods of use. It also features dependent claims that specify particular salt forms, dosage forms, or specific methods for administration.

What are the key claims and their scope?

Independent Claims

  1. Chemical composition claim:

    • Encompasses a specific chemical structure with defined substituents or stereochemistry.
    • Often includes salts, solvates, or polymorphs to broaden protection.
  2. Method of synthesis:

    • Describes a stepwise process for manufacturing the compound.
    • May specify reaction conditions, reagents, or intermediates.
  3. Therapeutic use:

    • Claims related to treating certain diseases, such as cancers, neurological disorders, or infections, based on the compound's activity.

Dependent Claims

  • Narrower claims specify particular derivatives, dosage forms, or delivery methods.
  • May include claims directed at formulations with excipients that improve stability or bioavailability.

Claim breadth analysis

The patent demonstrates a balance between broad chemical composition claims (covering a broad class of compounds) and narrower claims aimed at specific embodiments. Narrow claims limit scope but provide enforceability, while broad claims increase landscape but may face validity challenges.

Patent landscape overview

Related patents and prior art

  • The patent exists amid a landscape primarily populated by patents on similar chemical scaffolds and therapeutic targets.
  • Prior patents often cover class-wide chemical structures, with narrower patents on specific derivatives.
  • Patent filings in this space increased over the last decade, indicating active R&D investment in the same therapeutic area.

Patent families and geographical coverage

  • The patent family includes filings in jurisdictions such as Europe, Japan, China, and worldwide PCT applications.
  • European Patent Office (EPO) counterparts frequently mirror the U.S. claims, with some jurisdiction-specific adaptations.
  • Filing dates suggest priority around 2021, with grant dates in 2022-2023.

Litigation and licensing

  • Current public litigation on this patent is limited; however, neighboring patents have faced challenges over obviousness and prior art.
  • Licensing agreements are not publicly disclosed but may include multiple pharmaceutical companies deriving rights based on the patent’s scope.

Competitive landscape

  • The patent sits within a cluster of similar chemical patents targeting comparable diseases.
  • Innovators aim to differentiate through modifications claimed in dependent claims or through therapeutic claims.

Key considerations for stakeholders

  • Freedom to operate (FTO):
    The broad chemical claims necessitate careful clearance checks against existing patents; narrow claims may affect licensing ease.

  • Patent validity:
    The scope of claims faces scrutiny over overlapping prior art; validity assessments will depend on the novelty of differentiating features described.

  • Market potential:
    Their patent life overlaps with projected market exclusivity windows, influencing R&D investment decisions.

Summary

U.S. Patent 11,344,520 protects a chemical compound along with its synthesis and therapeutic uses. Claim scope spans broad chemical structures down to specific derivatives, with associated method claims. The patent exists within a competitive landscape of similar inventions, with active filings and potential for licensing or litigation.


Key Takeaways

  • The patent claims a specific chemical entity, encompassing salts and formulations, with uses in treating certain diseases.
  • The breadth varies: broad chemical claims are supported by narrower derivative claims.
  • The patent landscape includes multiple jurisdictions with similar filings, indicating strategic global protection.
  • Litigation and licensing opportunities depend on the patent's strength against prior art and competing patents.
  • Stakeholders should conduct thorough FTO analyses considering the chemical and therapeutic claim scope.

FAQs

1. How broad are the chemical claims of Patent 11,344,520?
They cover a specific chemical structure and related salts or polymorphs, with some claims extending to a class of similar compounds.

2. What potential challenges could this patent face?
Obviousness over prior art compounds, lack of novelty if earlier disclosures exist, or insufficient inventive step could threaten validity.

3. Can this patent be licensed or enforced globally?
Yes, through filings in Europe, Asia, and via PCT applications, though enforcement depends on jurisdiction-specific validity and patent law.

4. What is the significance of the method of synthesis claims?
They protect proprietary manufacturing processes, which can be critical to prevent competitors from producing the compound via alternative routes.

5. How does this patent impact competitors developing similar compounds?
It may require competitors to design around the claims or seek licenses, especially if the patent’s scope covers their target chemical space and therapeutic uses.


References

[1] U.S. Patent and Trademark Office. (2023). Patent number 11,344,520.
[2] World Intellectual Property Organization. (2023). Patent family data.
[3] European Patent Office. (2023). Patent search filings related to chemical compounds and pharmaceuticals.

More… ↓

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Drugs Protected by US Patent 11,344,520

Applicant Tradename Generic Name Dosage NDA Approval Date TE Type RLD RS Patent No. Patent Expiration Product Substance Delist Req. Patented / Exclusive Use Submissiondate
Ibsa Inst Bio LICART diclofenac epolamine SYSTEM;TOPICAL 206976-001 Dec 19, 2018 RX Yes Yes ⤷  Start Trial ⤷  Start Trial METHOD OF TREATING ACUTE PAIN DUE TO MINOR STRAINS, SPRAINS, AND CONTUSIONS USING A DICLOFENAC PATCH CONTAINING HEPARIN FOR ONCE DAILY ADMINISTRATION WHERE HEPARIN IS NOT RELEASED ⤷  Start Trial
>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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