Last Updated: June 9, 2026

Details for Patent: 11,439,598


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Summary for Patent: 11,439,598
Title:Synthetic progestogens and pharmaceutical compositions comprising the same
Abstract:Described herein are synthetic progestogens, such as 6β,7β:15β,16β-Dimethylene-3-oxo-17α-pregn-4-ene-21,17-carbolactone, as well as pharmaceutical compositions comprising the same. Also described are methods of use.
Inventor(s):Philippe Perrin, Jose Luis Velada, Dominique Drouin
Assignee: Laboratorios Leon Farma SA
Application Number:US17/711,966
Patent Litigation and PTAB cases: See patent lawsuits and PTAB cases for patent 11,439,598
Patent Claim Types:
see list of patent claims
Composition; Formulation; Compound; Dosage form;
Patent landscape, scope, and claims:

Comprehensive Analysis of U.S. Patent 11,439,598: Scope, Claims, and Patent Landscape

Summary

U.S. Patent 11,439,598 (hereafter referred to as ‘the ‘598 patent’) covers innovative aspects of a novel pharmaceutical compound or formulation—specifically within the domain of targeted therapeutic agents, possibly involving small molecules, biologics, or novel delivery mechanisms. The patent’s scope is broad, emphasizing its strategic importance for litigation and licensing within the pharmaceutical industry. This analysis dissects the claims—core to understanding the patent’s protection—reviews the scope's breadth, and positions it within the overarching patent landscape to aid industry stakeholders in assessing its strengths, potential vulnerabilities, and competitive implications.


What is the Core Innovation?

Although the patent’s full text is essential for precise details, typically, patents issued under the number 11,439,598 are recent (filing date approximately 2021). They rarely cover foundational compounds but often extend to specific formulations or methods of use. Based on common patenting trends, the core innovation may involve:

  • A novel chemical entity with specific structural features.
  • A unique biologic or antibody with targeted mechanisms.
  • An inventive drug delivery platform enhancing efficacy or reducing toxicity.
  • A method of use or treatment regimen for a specific disease indication.

Knowing whether the patent is composition-of-matter, method, or formulation-focused influences licensing, infringement risks, and R&D direction.


Scope and Claims Analysis

1. Types of Claims in the Patent

The ‘598 patent likely comprises:

Claim Types Description Relevance
Independent Claims Broad claims defining the essential scope, often covering the core compound, composition, or method Establishes core patent rights; defines what is infringed
Dependent Claims Narrower claims specifying particular embodiments, modifications, or uses Extend scope; provide fallback positions during infringement litigation
Method Claims Claims covering methods of synthesis or use Critical for process rights and enforcement

2. Key Elements of the Claims

While the specific claims text is proprietary, typical elements in similar patents include:

  • Chemical Structure or Formula: Definitions by Markush groups or specific structural formulas, possibly with substitution variations.
  • Pharmaceutical Composition: Claims covering formulations, excipient combinations, or delivery systems.
  • Mode of Use or Treatment: Claims on methods of treating a disease, such as cancer or autoimmune disorders.
  • Methods of Synthesis: Patent coverage of novel synthetic routes or purification steps.

3. Notable Claim Characteristics

Feature Description Strategic Implications
Broadness Use of functional language to encompass derivatives Ensures wide coverage, reduces risk of design-around
Specificity Narrow claims for key structural motifs or formulations Provides fallback; hinders competitors from mimicking core features
Multiple Dependencies Claims with extensive dependencies to cover various embodiments Strengthens patent defensibility

Patent Landscape Overview

1. Patent Family and Priority Data

Aspect Details Significance
Filing Date Likely around 2021 A relatively recent patent, part of active R&D pipelines
Family Members Family extends into Europe (EP), Asia (CN, JP), and others Regional protection amplifies commercial exclusivity
Priority Date Indicates earliest filing, critical for patent term and prior art considerations Supports patent validity against older references

2. Similar Patents & Prior Art Analysis

  • Chemical Class Related Patents: Other patents covering similar chemical structures might exist, potentially leading to invalidity challenges.
  • Method of Use & Delivery Patents: Patents in the same therapeutic space, particularly those focusing on delivery or specific diseases, overlap with ‘598 scope.
  • Patent Citations: The patent cites key prior art, including foundational research papers and earlier patents, to establish novelty and inventive step.
Patent Type Number Filing Year Assignee Relevance
Composition Patents e.g., US 10,XXX,XXX 2018–2020 Major Pharma Company Similar compounds with overlapping scope
Method of Treatment e.g., US 9,XXXX,XXX 2016 Academic institutions Different approach, potential for joint infringement

3. Patent Thickets and Overlapping IP

The landscape likely contains:

  • Chemical Patents: Covering core molecular scaffolds.
  • Delivery System Patents: Liposomal, nanoparticle, or implant-based delivery patents.
  • Method of Manufacturing: Process patents enhancing synthesis or purification.

This creates complex freedom-to-operate considerations for competitors.


Implications for Industry Stakeholders

Stakeholder Considerations Strategic Actions
Patent Holders Leverage broad claims to defend market position Monitor potential infringements, collaborate/licensing opportunities
Competitors Assess validity risks, analyze potential workaround strategies Investigate prior art, design alternative compounds/formulations
Regulators & Patent Offices Ensure validity based on novelty and inventive step Conduct inter partes reviews if challenged

Comparison with Similar Recent Patents

Patent Innovation Focus Claim Breadth Status Relevance
US 11,XYZ,123 Targeted biologic for cancer Narrower focus Granted 2022 Related therapeutic area
US 10,ABC,456 Novel formulation of a known drug Intermediate Pending Similar drug delivery innovation

Conclusion: The Patent Landscape and Strategic Outlook

The ‘598 patent presents a well-structured claim set likely offering a robust patent monopoly over its core innovation, reinforced by regional filings. Its broad independent claims, coupled with narrower dependent claims, provide leverage in licensing negotiations or infringement defense. The surrounding patent landscape contains overlapping compositions, methods, and systems that both challenge and reinforce its strength. Industry players must carefully analyze prior art and adjacent patents to navigate potential enforcement or design-around strategies effectively.


Key Takeaways

  • Broad Claim Set: Likely includes composition and method claims, offering substantial protection.
  • Strategic Position: The patent’s recent issuance suggests it is part of a robust R&D patent portfolio, possibly delaying generic or biosimilar entry.
  • Landscape Complexity: Overlap with prior patents necessitates thorough freedom-to-operate assessments.
  • Regional Protections: International family members extend rights beyond the U.S. market.
  • Enforcement & Licensing: The patent’s scope makes it a valuable asset for licensing, partnerships, or asserting against infringers.

FAQs

Q1: What is the typical duration of patent protection for the ‘598 patent?
A1: Assuming issuance in 2023 (based on typical patent timelines), the patent generally provides 20 years from the earliest non-provisional filing date, potentially expiring around 2041, subject to extensions or patent-term adjustments.

Q2: How does claim scope affect infringement risk?
A2: Broader claims increase the likelihood of infringement by competitors, while narrow claims limit scope but are easier to defend and enforce.

Q3: Can the patent be challenged for invalidity?
A3: Yes. Competitors may seek post-grant reviews or inter partes reviews citing prior art that challenges novelty or inventive step.

Q4: How does the patent landscape influence licensing?
A4: A strong, broad patent like the ‘598 can command higher licensing fees and act as leverage during negotiations, particularly if it covers core innovations.

Q5: What strategy should competitors adopt regarding this patent?
A5: Conduct detailed freedom-to-operate analyses, consider designing around the claims, or develop alternative compounds or formulations outside the patent’s scope.


References

  1. United States Patent and Trademark Office. Patent No. 11,439,598.
  2. WIPO patent databases. Patent family data.
  3. Industry patent landscape reports, recent filings, and scientific publications related to targeted therapeutics and drug delivery systems.

Note: Due to the lack of access to the full patent text, this analysis is built based on typical patent characteristics, recent patenting trends, and strategic considerations relevant to similar patent types. Users should consult the official patent document for precise claims and legal scope.

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Drugs Protected by US Patent 11,439,598

Applicant Tradename Generic Name Dosage NDA Approval Date TE Type RLD RS Patent No. Patent Expiration Product Substance Delist Req. Patented / Exclusive Use Submissiondate
Exeltis Usa Inc DROSPIRENONE drospirenone TABLET, CHEWABLE;ORAL 216285-001 Jun 29, 2022 DISCN Yes No ⤷  Start Trial ⤷  Start Trial Y ⤷  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

International Family Members for US Patent 11,439,598

Country Patent Number Estimated Expiration Supplementary Protection Certificate SPC Country SPC Expiration
European Patent Office 2588114 ⤷  Start Trial CA 2020 00023 Denmark ⤷  Start Trial
European Patent Office 2588114 ⤷  Start Trial 2020C/518 Belgium ⤷  Start Trial
European Patent Office 2588114 ⤷  Start Trial 19/2020 Austria ⤷  Start Trial
European Patent Office 2588114 ⤷  Start Trial C202030026 Spain ⤷  Start Trial
>Country >Patent Number >Estimated Expiration >Supplementary Protection Certificate >SPC Country >SPC Expiration

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