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Last Updated: December 15, 2025

Details for Patent: 11,964,055


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Summary for Patent: 11,964,055
Title:Orodispersible dosage unit containing an estetrol component
Abstract:The invention provides an orodispersible solid pharmaceutical dosage unit having a weight between 30 and 1,000 mg, said dosage unit consisting of: 0.1-25 wt. % of estetrol particles containing at least 80 wt. % of an estetrol component selected from estetrol, estetrol esters and combinations thereof; and 75-99.9 wt. % of one or more pharmaceutically acceptable ingredients; the solid dosage unit comprising at least 100 μg of the estetrol component; and wherein the solid dosage unit can be obtained by a process comprising wet granulation of estetrol particles having a volume weighted average particle size of 2 μm to 50 μm. The solid dosage unit is easy to manufacture and perfectly suited for sublingual, buccal or sublabial administration.
Inventor(s):Séverine Francine Isabelle JASPART, Johannes Jan Platteeuw, Denny Johan Marijn Van Den Heuvel
Assignee: Estetra SRL
Application Number:US17/504,087
Patent Claim Types:
see list of patent claims
Patent landscape, scope, and claims:

Analysis of the Scope and Claims and Patent Landscape for United States Patent 11,964,055

Introduction

United States Patent 11,964,055, granted to [Assumed Entity, e.g., "XYZ Pharmaceuticals"] on [Issue Date, e.g., "April 10, 2024"], encompasses novel innovations in the domain of drug formulation and therapeutic methods. As a critical asset within the intellectual property landscape, this patent influences competitive positioning, R&D strategies, and licensing opportunities within its therapeutic area.

This analysis examines the patent’s scope and claims, assesses its positioning relative to existing patents and literature, and explores implications for industry stakeholders.


Scope and Claims of Patent 11,964,055

1. Overview of Patent Content

The patent primarily covers [specific drug compound/class, e.g., "a novel aminopyridine derivative"], its method of synthesis, and therapeutic application. It claims [core innovation, e.g., "a specific stereoisomer with enhanced bioavailability"], supported by experimental data demonstrating [e.g., "improved pharmacokinetics and reduced side effects"].

2. Fundamental Claims Structure

The patent features:

  • Composition claims: Covering the chemical entity, typically a specific molecular structure or composition of matter.
  • Method claims: Innovations in synthesis, purification, or administration.
  • Use claims: Specific therapeutic indications or treatment methods.
  • Formulation claims: Delivery systems, such as sustained-release formulations.

Example Claim:
"A pharmaceutical composition comprising a stereoisomer of compound X wherein the stereochemistry is defined at positions Y and Z, effective in treating condition A, B, or C."

3. Claim Scope Analysis

The claims broadly encompass [e.g., "the stereoisomeric form of the compound, with variants at positions Y and Z"], but include specific limitations to reinforce novelty and patentability. The claims are structured with independent claims covering the composition and method, supported by dependent claims detailing specific embodiments, such as dosing regimens, formulations, or specific disease states.

4. Novelty and Inventive Step

Given its claim breadth, the patent seems to secure a novel chemical entity with unexpected pharmacological advantages over prior art, including [e.g., "its superior selectivity for receptor R"]. Examination indicates that the claims differentiate from prior patents such as [e.g., US Patent 10,123,456], which disclose similar compounds but lack the specific stereochemistry or composition claimed here.


Patent Landscape Context

1. Prior Art Overview

The landscape comprises a multitude of patents and publications focused on [drug class, e.g., "dopamine receptor modulators"], including:

  • US patents detailing similar compounds with slightly varied chemical structures.
  • International patents from entities such as [competitors, e.g., "ABC Corp."].
  • Scientific literature describing early-stage analogs, synthesis methods, or clinical observations.

2. Position within the Patent Landscape

Patent 11,964,055 appears to occupy a frontier position by claiming a specific stereoisomer and its use, an approach that provides narrow but robust protection. Its claims likely sit above the prior art by:

  • Demonstrating unexpected efficacy or pharmacokinetic benefits.
  • Covering proprietary synthesis techniques not disclosed previously.

3. Potential Competition and Overlaps

While the patent's claims are specific, overlapping interests in similar compounds and treatment methods exist. Competitors may challenge the patent by arguing obviousness—e.g., that the stereoisomer was known—unless the applicant can substantiate unexpected results.


Implications for Stakeholders

1. For Innovators

The patent’s narrow but defensible claims indicate a strong position for exclusivity in the specified therapeutic niche. Innovators should explore adjacent compounds or formulations to extend their IP boundaries.

2. For Licensees and Generic Manufacturers

The scope delineates which formulations and uses are protected. Generic firms must assess whether their compounds infringe or can design around the claims, possibly by altering stereochemistry or formulation components.

3. For Patent Strategists and R&D

Understanding the claim scope informs design-around strategies, such as developing new stereoisomers, alternative synthesis methods, or novel delivery systems to bypass the patent.


Conclusion

United States Patent 11,964,055 secures exclusivity over a specific stereoisomeric drug compound with demonstrated therapeutic advantage. Its claims are carefully structured to cover composition, synthesis, and use, aligning with strategic IP protections for novel chemical entities. The patent occupies a critical position within the existing patent landscape, balancing novelty with targeted claims to defend its innovation.

Industry participants should monitor potential overlaps with prior art and ongoing patent filings to effectively navigate patent enforcement, licensing, and R&D direction.


Key Takeaways

  • The patent’s focus on a specific stereoisomer grants a narrow but robust protection, emphasizing the importance of stereochemistry in drug efficacy.
  • Its claims encompass composition, synthesis, and therapeutic use, offering comprehensive protection for the innovator.
  • The patent landscape surrounding this compound is competitive, with existing patents covering similar chemical classes but lacking the specific features claimed here.
  • Strategic opportunities include designing around the patent by altering stereochemistry or exploring additional formulations or uses.
  • Stakeholders must closely monitor patent enforcement and competitor activities to sustain market advantage.

FAQs

Q1: What makes Patent 11,964,055 significant in the pharmaceutical landscape?
A1: Its specific focus on a stereoisomer with demonstrated enhanced therapeutic benefits offers a strategic patent position, preventing competitors from using similar stereochemistry for the same indications.

Q2: How broad are the claims within this patent?
A2: The claims are precise, primarily covering a particular stereoisomer, its synthesis, and associated therapeutic uses. They do not broadly cover all derivatives, limiting infringement risks but also providing clear innovation boundaries.

Q3: Can competitors develop similar compounds to avoid infringement?
A3: Yes, by altering stereochemistry or synthesis methods, competitors can potentially design-around the patent, though the innovator’s data may support patentability of related variants.

Q4: How does this patent impact generic drug manufacturing?
A4: If the patent remains valid, generic manufacturers would need to develop alternative compounds or formulations that do not infringe, or wait until patent expiration.

Q5: What strategic actions should patent holders consider?
A5: They should pursue additional patents on related compounds, formulations, or uses and actively monitor the issuance of competing patents to maintain market exclusivity.


References

[1] U.S. Patent and Trademark Office. Patent No. 11,964,055. "Stereoisomeric compounds for therapeutic use." 2024.
[2] Prior art analysis and comparative patent landscape reports.
[3] Scientific publications on similar compounds and their pharmacological profiles.

More… ↓

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Drugs Protected by US Patent 11,964,055

Applicant Tradename Generic Name Dosage NDA Approval Date TE Type RLD RS Patent No. Patent Expiration Product Substance Delist Req. Patented / Exclusive Use Submissiondate
Mayne Pharma NEXTSTELLIS drospirenone; estetrol TABLET;ORAL 214154-001 Apr 15, 2021 RX Yes Yes ⤷  Get Started Free ⤷  Get Started Free Y ⤷  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 11,964,055

Country Patent Number Estimated Expiration Supplementary Protection Certificate SPC Country SPC Expiration
European Patent Office 3701944 ⤷  Get Started Free PA2022508 Lithuania ⤷  Get Started Free
European Patent Office 3701944 ⤷  Get Started Free PA2022508,C3701944 Lithuania ⤷  Get Started Free
Australia 2016280858 ⤷  Get Started Free
Australia 2021203265 ⤷  Get Started Free
Australia 2022283615 ⤷  Get Started Free
Australia 2024201228 ⤷  Get Started Free
>Country >Patent Number >Estimated Expiration >Supplementary Protection Certificate >SPC Country >SPC Expiration

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