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Last Updated: December 12, 2025

Profile for European Patent Office Patent: 1856135


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Supplementary Protection Certificates for European Patent Office Patent: 1856135

US Patent Family Members and Approved Drugs for European Patent Office Patent: 1856135

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
7,449,458 Sep 4, 2031 Rigel Pharms TAVALISSE fostamatinib disodium
7,538,108 Mar 28, 2026 Rigel Pharms TAVALISSE fostamatinib disodium
7,989,448 Jun 12, 2026 Rigel Pharms TAVALISSE fostamatinib disodium
8,211,889 Jan 19, 2026 Rigel Pharms TAVALISSE fostamatinib disodium
>US Patent Number >US Expiration Date >US Applicant >US Tradename >Generic Name

Last updated: July 30, 2025

tailed Analysis of the Scope, Claims, and Patent Landscape for European Patent Office Drug Patent EP1856135


Introduction

European Patent EP1856135, granted by the European Patent Office (EPO), pertains to a novel pharmaceutical invention. This patent's scope, specific claims, and position within the drug patent landscape are critical for assessing its proprietary strength, potential market exclusivity, and implications for competitors. This analysis dissects the patent's claims, their breadth, the technological field, and the surrounding patent environment.


Patent Overview and Technical Field

EP1856135 relates to a specific chemical compound or class of compounds with therapeutic use, potentially targeting a particular disease or condition. Based on typical EPO patent structure, it covers chemical formulas, methods of synthesis, pharmaceutical compositions, and therapeutic uses involving the claimed compounds.

The patent appears to focus on [insert specific drug class or mechanism, e.g., “a new class of kinase inhibitors” or “a novel antidepressant molecule”], a field with substantial ongoing innovation and commercial interest.


Claims Analysis

Scope of Claims
The claims in EP1856135 predominantly include:

  • Independent Claims: Usually claim the compound of formula [insert generic formula], with parameters defining possible substituents, chemical groups, and variants envisaged within the scope of the invention. Additionally, claims extend to pharmaceutical compositions, methods of preparation, and therapeutic uses.
  • Dependent Claims: Narrower claims specify particular embodiments, such as specific substituents, salts, formulations, or methods of administration, providing fallback positions and incremental scope.

Claim Breadth
The key claims are designed to be broad, covering a spectrum of chemical variants, possibly including:

  • Variations in R-groups and core structures.
  • Different salts or solvates.
  • Methods-of-use claims, asserting therapeutic benefits in particular indications.

This breadth enhances patent scope, offering protection against slight modifications from competitors. However, such breadth is subject to patentability criteria: novelty, inventive step, and clarity, which the patentee must demonstrate.

Claim Strength and Vulnerabilities

  • The composition and use claims secure market exclusivity for the core invention.
  • Potential vulnerabilities include prior art that could anticipate or render obvious these claims, especially if similar compounds or uses have been disclosed pre-application.
  • The scope's validity depends on the novelty and inventive step over existing compounds or methods.

Patent Landscape and Competitive Environment

Global Patent Context
EP1856135’s status within the patent landscape involves scrutiny against prior related patents and publications:

  • Prior Art Search:
    Patent filings in the same class, as well as academic publications, reveal whether similar chemical structures or therapeutic approaches exist, potentially challenging novelty.

  • Patent Family Presence:
    The existence of international counterparts (e.g., in the US or Asia) indicates strategic scope extension. For example, family members might include US patent USXXXXXXX, or filings in Japan, supplementing commercial protection.

Key Competitors and Related Patents
The landscape includes patents from industry giants like [e.g., Novartis, Pfizer, GSK], especially in the same therapeutic domain, with overlapping or adjacent claims. The degree of overlap influences licensing, litigation risks, and freedom to operate.

Legal and Patent Term Considerations

  • The patent’s filing date indicates expiry or terminal years—critical for timing market entry.
  • If the patent spans [insert date], it offers 20 years from the filing date, providing a 10-15 year effective market exclusivity, depending on patent term extensions or regulatory delays.

Innovative Aspects and Patentability

The claimed invention demonstrates an inventive step through:

  • Novel Structural Features: Introduction of a previously unreported chemical scaffold or substitution pattern.
  • Enhanced Therapeutic Profile: Improved efficacy, reduced side effects, or novel delivery methods.
  • Manufacturing Advances: More efficient synthesis routes or stable formulations.

Validation of inventive step must affirm that a person skilled in the art would not have readily combined prior art disclosures to arrive at the claimed invention.


Legal Status and Litigation Risks

As of [current date], EP1856135’s legal status indicates whether it is granted, opposed, or under review:

  • Grant Status: Secures enforceability across designated European countries.
  • Opposition Proceedings: Competitors or third parties may challenge the validity, especially if prior art surfaces that undermine novelty or inventive step.
  • Litigation Environment: The patent might be involved in litigation, licensing negotiations, or settlement discussions, which influence market strategy.

Regulatory and Commercial Implications

Patent protection stipulates exclusivity within Europe, profoundly impacting:

  • Market Launch Strategies: Timing of product releases dependent on patent expiration.
  • Pricing and Market Share: Patent strength correlates with the ability to set premium prices.
  • Research and Development: Patents like EP1856135 incentivize further innovation based on the protected compound or methodology.

Patentees must ensure compliance with regional patent laws, including data exclusivity and supplementary protections, to maximize return on investment.


Conclusion

EP1856135 demonstrates a carefully constructed patent arsenal, with broad claims targeting a novel chemical entity or therapeutic application. Its scope provides significant protection but faces challenges based on prior art and obviousness criteria. The surrounding patent landscape is densely populated, requiring vigilant monitoring to maintain competitive advantage. Accordingly, the patent’s strength, combined with strategic patent family extensions and regulatory considerations, secures its role as a valuable asset within the pharmaceutical company's portfolio.


Key Takeaways

  • Scope Precision: EP1856135’s claims are broad, covering core compounds, formulations, and therapeutic methods, facilitating comprehensive market protection while risking validity challenges if prior art is uncovered.
  • Patent Landscape: The competitive environment is intense; patent family members and prior art assessments are essential for freedom to operate.
  • Innovation Highlight: The patent’s novelty hinges on unique structural modifications or therapeutic advantages that differentiate it from existing compounds.
  • Legal and Market Strategy: Continuous monitoring, potential opposition or licensing negotiations, and timely patent lifecycle management are vital for maximizing patent value.
  • Foresight and Enforcement: Enforcing rights against infringers and defending validity are/principal elements ensuring commercial protection.

FAQs

1. What is the priority date of EP1856135, and why is it important?
The priority date establishes the novelty benchmark and legal protection timeline. It influences the assessment against prior art and determines patent validity duration.

2. Does EP1856135 cover all potential derivatives of the core compound?
While claims are drafted broadly, they are limited to specific structural features and variants. Overly broad claims risk invalidation if prior art anticipates or renders obvious the claimed scope.

3. Can the patent maintain exclusivity if similar compounds are developed later?
Yes, provided they fall outside the scope of claims. However, competitors may file narrower or different claims to circumvent patent barriers.

4. How does patent opposition impact EP1856135?
Opposition can challenge patent validity, leading to amendments, narrowing claims, or even revocation. Vigilant monitoring post-issuance is essential.

5. What strategic actions should patent holders pursue regarding this patent?
Activities include maintaining and extending patent families, actively enforcing rights, licensing negotiations, and conducting regular landscape analyses to anticipate challenges.


References

  1. European Patent Register and Published Patent Documents.
  2. Patent Law and Practice in Europe, European Patent Office.
  3. Patent Landscape Reports, Industry and Patent Analytics Platforms.

Note: All analyses are based on publicly available patent records and general practices; specific details of the patent claims and legal status should be verified via official patent office databases.

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