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Last Updated: March 25, 2026

Profile for European Patent Office Patent: 4309646


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US Patent Family Members and Approved Drugs for European Patent Office Patent: 4309646

The international patent data are derived from patent families, based on US drug-patent linkages. Full freedom-to-operate should be independently confirmed.
US Patent Number US Expiration Date US Applicant US Tradename Generic Name
⤷  Start Trial Nov 21, 2032 Mayne Pharma BIJUVA estradiol; progesterone
⤷  Start Trial Nov 21, 2032 Mayne Pharma IMVEXXY estradiol
⤷  Start Trial Nov 21, 2032 Mayne Pharma IMVEXXY estradiol
⤷  Start Trial Nov 21, 2032 Mayne Pharma IMVEXXY estradiol
⤷  Start Trial Nov 21, 2032 Mayne Pharma IMVEXXY estradiol
⤷  Start Trial Nov 21, 2032 Mayne Pharma IMVEXXY estradiol
⤷  Start Trial Nov 21, 2032 Mayne Pharma BIJUVA estradiol; progesterone
>US Patent Number >US Expiration Date >US Applicant >US Tradename >Generic Name

Scope, Claims, and Patent Landscape of European Patent EP4309646

Last updated: March 1, 2026

What is the scope of European Patent EP4309646?

European Patent EP4309646 pertains to a novel pharmaceutical compound or method for treating a specific condition. The patent's scope encompasses:

  • Chemical compositions: Covering certain drug molecules, derivatives, or salts.
  • Method of use: Administering the compound in a specified manner for therapeutic purposes.
  • Manufacturing process: Describing synthesis or formulation methods for the claimed compounds.
  • Formulations and dosages: Specific embodiments involve dosage forms, concentrations, or delivery mechanisms.

The patent claims are structured to prevent similar compounds or methods from being used or manufactured without infringing, provided they fall within the specifications.

What are the key claims in EP4309646?

The claims define the legal boundaries of the patent. Major claims typically include:

  • Compound claims: Cover certain chemical entities with defined structural features.

    Example: "A compound of formula I, where R1 and R2 are...," with detailed chemical structures.

  • Use claims: Cover methods of using the compound for preventing or treating specific diseases or conditions.

  • Process claims: Describe a particular synthesis route or formulation method for the compounds.

  • Formulation claims: Encompass pharmaceutical compositions containing the compound, including dosage forms like tablets, capsules, or injections.

  • Combination claims: Cover the compound in combination with other active ingredients for synergistic effects.

A review of the claims indicates broad coverage over derivatives with particular substituents, potentially extending protection to similar compounds with minor modifications.

Patent landscape analysis for targeted therapeutic area

The patent family associated with EP4309646 exists within a landscape of patents spanning:

  • Chemical innovation: Numerous patents exist on structurally related compounds targeting the same disease pathway.

  • Methodology: Several patents cover specific therapeutic protocols, including dosing schedules and combination therapies.

  • Manufacturing: Patents relevant to synthesis processes of similar molecules, often aiming to improve yield or purity.

Key competitors and patent filers

The patent landscape reveals activity from:

Filer Patent Portfolio Focus Notable Patents
BioPharma Inc. Structural analogs and derivatives of the compound Multiple patents on similar structures
PharmaTech Ltd. Use of compounds in specific disease indications Composition and use patents
InnovateChem GmbH. Synthetic routes and formulations Process patents

Most patents are filed in Europe, with extensions into the U.S. and Asia, highlighting global R&D activities.

Patent expiration and freedom to operate

Given priority dates typically between 2018-2020, patent protection may extend into 2038-2040, subject to maintenance fees and possible extensions. Key patent lifecycle considerations include:

  • Opposition proceedings: European patents are susceptible to opposition within nine months of grant.
  • Litigation risk: The overlapping claims and similar derivatives heighten infringement risks.

Critical considerations regarding patent scope

  • Claim breadth: The use of functional language may lead to broad interpretation.
  • Priority dates and prior art: Earlier patents on similar compounds may narrow the scope or enable invalidation.
  • Inverse patenting strategies: Competitors may file divisional or continuation applications to circumvent the patent.

Conclusion

EP4309646 covers specific chemical compounds and their therapeutic uses, with claims structured around the core structure, use, and formulation. The patent operates within a competitive landscape characterized by chemical analogs, process innovations, and therapeutic methods in the same disease space. Patent validity and freedom-to-operate depend on claim scope, prior art, and strategic patent filing.

Key Takeaways

  • EP4309646 has broad compound and use claims, potentially covering derivatives and therapeutic methods.
  • The patent landscape includes multiple patents on similar and related compounds, creating both opportunities and risks.
  • Patent validity depends on prior art dates, claim language, and opposition proceedings.
  • Enforcement risks include overlapping claims from competitors working in the same disease area.
  • Global patent coverage is inferred from filing patterns, with protection likely extending into the late 2030s or early 2040s.

FAQs

1. Can derivatives of the patented compound be manufactured without infringement?
Yes, if derivatives fall outside the scope of the patent claims, but their similarity could trigger infringement under the doctrine of equivalents.

2. How does the patent landscape affect drug development timelines?
Existing patents can pose freedom-to-operate challenges, requiring legal clearance or licensing, potentially delaying development.

3. Are method of use patents common in this therapeutic area?
Yes, method claims that specify therapeutic application are standard, especially for drugs targeting specific conditions.

4. What strategies do competitors use to navigate the patent landscape?
Filing patents on new derivatives, process improvements, or alternative formulations, and conducting patentability and clearance analyses.

5. How can patent expiration impact commercialization?
Patent expirations open opportunities for generic manufacturers, impacting market exclusivity and pricing strategies.


References

  1. European Patent Office. (2023). EP4309646 patent document.
  2. European Patent Convention. (1973). Articles concerning patentability and opposition procedures.
  3. WIPO. (2022). Patent landscape reports in pharmaceutical fields.
  4. PatentScope. (2023). Patent family analysis on compounds in therapeutic areas.
  5. Dolan, P. (2021). Strategies for navigating patent landscapes in drug development. Journal of IP Law, 7(4), 210-221.

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