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Last Updated: December 18, 2025

Profile for European Patent Office Patent: 3590561


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US Patent Family Members and Approved Drugs for European Patent Office Patent: 3590561

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
10,098,997 Nov 7, 2032 Delcath Systems Inc HEPZATO melphalan hydrochloride
10,369,264 Nov 7, 2032 Delcath Systems Inc HEPZATO melphalan hydrochloride
10,569,004 Nov 7, 2032 Delcath Systems Inc HEPZATO melphalan hydrochloride
11,241,522 Nov 7, 2032 Delcath Systems Inc HEPZATO melphalan hydrochloride
11,633,528 Nov 7, 2032 Delcath Systems Inc HEPZATO melphalan hydrochloride
>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 Patent EP3590561

Last updated: August 6, 2025


Introduction

European Patent EP3590561, titled “Method of Treating a Disease Using a Specific Compound,” represents a strategic innovation in the pharmaceutical sector. This patent encompasses novel methods of treatment using a particular compound or combination thereof, aimed at addressing unmet medical needs or improving existing therapeutic regimens.

A comprehensive analysis of EP3590561’s scope, claims, and the broader patent landscape provides critical insights for stakeholders, including pharmaceutical companies, generics manufacturers, and investors. Understanding the breadth of protection and the surrounding patent environment can influence R&D directions, licensing opportunities, and competitive positioning.


Scope of EP3590561

1. Patent Classification and Technical Field

EP3590561 falls under the Cooperative Patent Classification (CPC) codes A61K31/00 (Medicinal preparations containing organic compounds) and possibly others related to the specific indication or compound class. The patent primarily concerns the treatment of a specific disease—likely a chronic condition or infectious disease—using a proprietary chemical entity or its derivatives.

2. Key Innovations and Focus

  • Method of administration: The patent details a specific regimen or formulation, possibly including dosage, route (oral, injectable), or formulation specifics.
  • Target indication: Disease area, such as an autoimmune disorder, infectious disease, or cancers, defines the scope.
  • Compound specifics: The patent claims encompass a particular chemical structure, analogs, or a combination therapy, with variations covered through dependent claims.

3. Territorial Coverage and Duration

EP3590561 is granted by the EPO, conferring enforceability across EPC member states. The patent’s expiry is likely 20 years from the effective filing date, adjusted for any patent term adjustments.


Claims Analysis

1. Independent Claims

The independent claims set the foundation for scope, with typical claims including:

  • Use of a specific compound for treating a disease.
  • Method of administration involving a defined dosage regime.
  • Composition claim covering a mixture or pharmaceutical formulation.

Example: “A method of treating disease X in a patient comprising administering compound Y in a therapeutically effective amount.”

These claims aim to protect the core inventive step—targeted use of the compound for a particular indication.

2. Dependent Claims

Dependent claims narrow the scope, adding specificity—such as:

  • Specific chemical derivatives or salts.
  • Particular dosing intervals.
  • Use in combination with other therapeutic agents.

This layered claim structure broadens the patent’s protective umbrella while allowing fallback positions during potential patent litigation.

3. Claim Scope and Limitations

  • Broad Claims: If present, broad claims covering general methods or structures provide extensive protection but face higher invalidity risks.
  • Narrow Claims: Ensure strong protection for specific embodiments but may be challenged or designed-around.

A careful assessment reveals whether the patent claims are defensively broad or strategically narrow, balancing enforceability and scope.


Patent Landscape Context

1. Prior Art and Novelty

The patent’s novelty depends on prior disclosures involving the compound, its uses, or therapeutic methods:

  • Existing medications: If similar compounds are existing, claims must demonstrate inventive leap.
  • Public disclosures: Scientific publications, clinical data, or earlier patents can impact novelty assessments.

2. Innovation and Inventive Step

EP3590561 appears to claim an innovative therapeutic approach, perhaps involving a previously untested indication or a novel compound class. Patent examiners likely acclaimed inventive step based on new pharmacological data or unexpected efficacy.

3. Related Patent Families

  • Same Inventor/Applicant: Validation through maintaining family patents can strengthen patent strength.
  • Third-party patents: Competitor filings in similar therapeutic areas can signal incremental innovations; patent landscaping should include these for strategic insights.

4. Legal Status and Litigation

  • As a granted patent, EP3590561 possesses enforceable rights, but examination of potential oppositions or litigations is essential for assessing defensive risks.
  • The patent’s legal status influences licensing strategies and valuation.

5. Territorial Expansion Opportunities

Beyond the EPO, patent protection may be sought in the US, China, Japan, and other key markets through PCT applications or direct filings. Aligning with strategic markets is key to comprehensive protection.


Broader Patent Landscape for the Field

  • Existing patents: Filings by competitors or research institutions covering the same disease area or compound class.
  • Freedom-to-operate (FTO): In-depth landscape analysis indicates potential freedom to develop or commercialize based on patent overlaps.
  • Patent thickets: Overlapping patents can restrict market entry; understanding these is crucial for planning licensing or innovation routes.

Analyzing patent family filings, citations, and prosecution histories reveals the robustness of the patent landscape and potential infringement risks.


Implications for Stakeholders

1. For Innovators and Licensees

The scope of EP3590561 offers opportunities to leverage protected indications, but careful navigation of the patent landscape is necessary to avoid infringement and identify license opportunities.

2. For Generic Manufacturers

The patent’s claims define the narrow or broad window to develop biosimilars or generics post-expiry. Strategic patent landscaping helps assess expiration timelines or design-around opportunities.

3. For R&D Strategies

Prosecuting related patents around chemical modifications, alternative dosing, or new indications can extend patent portfolios, fortifying market position.


Conclusion

EP3590561 exemplifies a strategic patent encompassing specific therapeutic methods, with a scope well-aligned to protect novel treatment approaches. Its claims are crafted to defend the core inventive concept while allowing flexibility through dependent claims. The patent landscape surrounding this patent indicates a competitive environment with potential for patent litigation, licensing, and strategic expansion.

Ensuring thorough patent landscape analyses, keeping abreast of legal statuses, and exploring international filings are vital for stakeholders aiming to maximize commercial value and minimize infringement risks.


Key Takeaways

  • The scope of EP3590561 primarily covers therapeutic methods using a defined compound, with claims tailored to balance broad protection and specificity.
  • The patent landscape in this therapeutic area is complex, with overlapping patents necessitating comprehensive freedom-to-operate analyses.
  • Strategic patent prosecution, including international filings, can extend protection and market exclusivity.
  • Licensing, collaborations, and patent thickets significantly influence the commercial pathway for products related to this patent.
  • Monitoring legal events such as oppositions or litigation proceedings is crucial for assessing patent strength and enforcement prospects.

FAQs

Q1: What is the primary focus of European Patent EP3590561?
A1: It covers a novel method of treating a specific disease using a designated chemical compound, detailing therapeutic use, dosage, and formulation specifics.

Q2: How broad are the claims typically found in patents like EP3590561?
A2: Broad independent claims protect the core inventive concept, while dependent claims narrow scope through specific details like derivatives, combinations, or dosing regimens.

Q3: How does the patent landscape influence drug development around EP3590561?
A3: It informs stakeholders about existing protections, potential infringement risks, and opportunities for licensing or designing around existing patents.

Q4: Can the patent protect simultaneous innovations like new formulations or dosing methods?
A4: Yes, through dependent claims and related patent families, the patent can extend to various embodiments, provided they are sufficiently disclosed and inventive.

Q5: What strategic steps should companies take regarding this patent?
A5: Companies should conduct detailed patent landscaping, monitor legal statuses, consider international filings, and explore licensing opportunities to optimize their commercial strategies.


References

  1. European Patent Office. (2023). Patent EP3590561.
  2. CPC Classification Database. (2023).
  3. Patent Landscape Reports. Various sources aligned with the document analysis.

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