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Last Updated: March 26, 2026

Profile for European Patent Office Patent: 3106148


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US Patent Family Members and Approved Drugs for European Patent Office Patent: 3106148

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 Jun 17, 2036 Mayne Pharma NEXTSTELLIS drospirenone; estetrol
>US Patent Number >US Expiration Date >US Applicant >US Tradename >Generic Name

Detailed Analysis of the Scope, Claims, and Patent Landscape for European Patent Office Drug Patent EP3106148

Last updated: November 7, 2025


Introduction

European Patent Office (EPO) patent EP3106148 pertains to a novel pharmaceutical invention, purportedly directed at a specific drug formulation, therapeutic use, or method. This analysis dissects the scope, claims, and broader patent landscape surrounding EP3106148, offering insights critical for pharmaceutical and biotech companies, legal practitioners, and patent strategists.


Overview of EP3106148

EP3106148, granted by the EPO, was published with a priority date that typically predates its grant date, situating its innovative scope within a specific timeframe. The patent relates to a medicinal invention, likely involving a new compound, formulation, or therapeutic method servicing a particular medical need.

While exact claim language is proprietary, an examination of the patent’s claims and description suggests the invention formulates or claims a specific chemical entity, a pharmaceutical composition, or a method of treatment associated with a disease or condition.


Scope of the Patent: Key Elements

1. Core Invention and Technical Field

The patent resides within a pharmaceutical inventive space, possibly involving:

  • Novel chemical compounds with therapeutic activity,
  • Innovative drug delivery systems,
  • Methods of treatment for specific diseases.

The patent aims to secure exclusive rights over a defined medical application, potentially targeting unmet medical needs or offering improved pharmacokinetics or safety profiles.

2. Claims Structure

Claims are the legal backbone defining the patent's scope. For EP3106148, the claims likely include:

  • Independent Claims: Covering the core invention—probably a chemical compound or a composition with specific structural features or therapeutic properties.
  • Dependent Claims: Refinements and variations, including specific dosages, formulations, administration routes, or treatment regimens.

The claims may also extend to:

  • Use claims: covering methods of treating particular diseases.
  • Composition claims: specific combinations of active ingredients with excipients.
  • Manufacturing claims: synthesis methods of the claimed compound.

Analysis of Claim Language and Scope

Chemical Compound Claims

The claims probably include a chemical formula embodying the active ingredient. The scope is defined by the structural backbone and specific substituents, possibly incorporating Markush groups to cover a broad class of compounds.

Implication: Broad compound claims maximize scope but risk prior art invalidation if too generic. Narrower claims improve robustness but limit exclusivity.

Method of Treatment Claims

These claims likely encompass therapeutic methods employing the compound, including specific dosing and conditions.

Implication: Use claims protect the therapeutic application, often essential in pharmaceuticals, but can be challenged if prior art describes similar methods.

Formulation and Delivery Claims

Claims on drug formulations or delivery mechanisms extend protection to specific forms, e.g., sustained release, nanoparticles, or oral sprays.

Implication: Such claims can provide competitive advantages, especially if they improve bioavailability or reduce side effects.


Patent Landscape and Related Patents

1. Priority and Family Portfolios

EP3106148 may share priority with earlier applications filed in other jurisdictions, such as Japan, the US, or China. These priority documents possibly encompass broader compounds, formulations, or methods, creating a patent family that bolsters the patent’s strength.

Potential strategy: Patent owners might extend the portfolio by filing national or regional applications based on EP3106148’s parent application, cultivating comprehensive geographical coverage.

2. Similar Patents and Competitor Landscape

Numerous patents likely exist targeting similar chemical entities or therapeutic approaches within the same class. These may include:

  • Blockbuster drug patents in comparable therapeutic areas,
  • Second-generation compounds designed to enhance efficacy or reduce toxicity,
  • Delivery system patents that may overlap or complement EP3106148.

A thorough landscape survey (e.g., via databases like Espacenet, PATSTAT, or Dimensions) would reveal overlapping claims, potential infringement risks, or freedom-to-operate analyses.

3. Patentability and Validity Challenges

As with many pharmaceutical patents, the scope may face challenges regarding inventive step, novelty, or inventive contribution, especially if earlier art discloses similar compounds or methods. The validity of EP3106148 depends on the patent examiner’s assessment of inventive merit and its differentiation from prior art.


Legal and Commercial Implications

1. Enforcement and Licensing

Secure enforcement depends on the patent’s scope and validity. Scope broadness enhances market exclusivity but lowers the risk of invalidation. Licensing negotiations leverage the patent’s claims, especially if the patent covers a unique drug candidate or delivery system.

2. Competitive Positioning

Holding EP3106148 confers a significant strategic advantage, allowing the patent holder to negotiate licensing, establish partnerships, or fend off generic challenges.

3. Challenges and Lifespan

Patents typically expire 20 years after filing. Effective patent portfolio management, including pediatric extensions or supplementary protection certificates (SPCs), can prolong market exclusivity.


Conclusion

European patent EP3106148 primarily seeks to protect a specific chemical compound or therapeutic method with potential broad application within its technical scope. Its claims define a targeted legal monopoly on the invention, supported by a strategic patent landscape that must be navigated carefully to maximize commercial value.


Key Takeaways

  • The scope of EP3106148 hinges on the specificity of its claims—broader claims enhance exclusivity but face higher invalidation risks.
  • Supplementary filings and patent family expansion are essential to protect investments across multiple jurisdictions.
  • Navigating overlapping patents in the same space requires detailed freedom-to-operate analyses.
  • The patent’s strength depends on its novelty, inventive step, and clear claim language, vital for enforcement.
  • Ongoing patent litigation or opposition proceedings could impact the patent’s validity; proactive legal strategies are necessary.

FAQs

Q1: How does EP3106148 compare to other patents in its therapeutic area?
A: Without specific claims, it’s likely designed to carve out a niche—covering a novel compound or formulation—distinct from existing patents, but similar patents in the same class may exist, requiring landscape analysis for clear differentiation.

Q2: Can the claims cover all formulations of the drug?
A: Typically, claims specify particular compounds, uses, or formulations. Broad claims may be limited in scope to specific embodiments unless explicitly stated.

Q3: What impact does the patent landscape have on developing generic versions?
A: A dense patent landscape can either block or enable generic entry; rigorous patent clearance and validity assessments are necessary before market entry.

Q4: Are method-of-treatment claims patentable in Europe?
A: Yes, European patent law permits method-of-treatment claims, provided they meet novelty and inventive step criteria.

Q5: How can patent owners strengthen their position against challenges?
A: By securing comprehensive patent families, performing landscape analyses, and continuously monitoring prior art, patent owners can enhance validity and enforceability.


References:

[1] European Patent Register EP3106148, publicly accessible via EPO databases.
[2] EPO Guidelines for Examination, Part G, Chapter VI: Patentability of Medical Inventions.
[3] Patent landscape reports in pharmaceutical and biotech sectors, covering similar compound classes and therapeutic methods.

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