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Last Updated: December 12, 2025

Profile for European Patent Office Patent: 4223747


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US Patent Family Members and Approved Drugs for European Patent Office Patent: 4223747

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
10,071,977 Feb 12, 2035 Vanda Pharms Inc HETLIOZ tasimelteon
10,071,977 Feb 12, 2035 Vanda Pharms Inc HETLIOZ LQ tasimelteon
10,829,465 Feb 12, 2035 Vanda Pharms Inc HETLIOZ tasimelteon
10,829,465 Feb 12, 2035 Vanda Pharms Inc HETLIOZ LQ tasimelteon
11,566,011 Feb 12, 2035 Vanda Pharms Inc HETLIOZ tasimelteon
>US Patent Number >US Expiration Date >US Applicant >US Tradename >Generic Name

Comprehensive Analysis of EPO Drug Patent EP4223747: Scope, Claims, and Patent Landscape

Last updated: August 1, 2025


Introduction

European Patent Office (EPO) patent EP4223747 pertains to an innovative pharmaceutical invention. This patent’s scope and claims are critical for stakeholders to assess intellectual property rights, freedom-to-operate, and competitive positioning. A detailed evaluation of the patent’s claims, their breadth, and the landscape surrounding similar patents provides strategic insights for industry players and investors alike. This analysis synthesizes the scope of the patent, examines its claims, and contextualizes its position within the broader patent landscape.


Patent Overview

EP4223747 was filed with the EPO, aiming to protect a novel therapeutic compound, formulation, or method of use, typically associated with recent advances in medicinal chemistry or biopharmaceuticals. While the exact inventive subject matter requires review of the full patent document, this analysis assumes the patent's focus on a new drug, dosage form, or treatment method.


Scope and Claims Analysis

1. Understanding the Claims Structure

The claims define the legal scope of protection. Typically, the patent comprises:

  • Independent Claims: Broad, encompassing core inventions — often related to a novel compound, composition, or therapeutic method.
  • Dependent Claims: Specific embodiments, narrow features, or alternative embodiments that rely on and further specify the independent claims.

Based on patent conventions and typical innovation themes, EP4223747 likely encompasses claims such as:

  • Compound Claims: Covering the chemical entity, including specific structural features.
  • Use Claims: Covering methods of treatment or diagnosis involving the compound.
  • Formulation Claims: Covering pharmaceutical compositions, dosages, or delivery mechanisms.
  • Process Claims: Covering manufacturing or synthesis methods.

2. Scope of the Independent Claims

Assuming the patent protects a novel compound, the independent claims are expected to be broad but precise, for example:

  • A new chemical entity characterized by particular structural features.
  • A method of treatment involving administering the compound to a specific patient population.

The language used in these claims determines their breadth and enforceability. For instance, broad chemical genus claims imply extensive protection but risk inadequate clarity or support. Conversely, narrow claims limit scope but may be easier to defend.

3. Limitations and Specificity of Claims

Dependent claims typically delineate:

  • Variations of the compound (e.g., salt forms, stereoisomers).
  • Specific dosage ranges.
  • Combination therapies.
  • Specific methods of synthesis or formulation.

The breadth of claims influences the patent's enforceability and risk of design-around strategies by competitors.

4. Strategic Significance of Claims

If EP4223747's claims are narrowly tailored, competitors can potentially develop around them by modifying the compound or method. Conversely, broad claims could offer extensive protection but might be challenged for lack of inventive step or clarity.


Patent Landscape for Similar Drugs and Innovations

1. Context within the Pharmaceutical Patent Landscape

The patent landscape shows increasing filings for:

  • New chemical entities (NCEs): For novel small molecules targeting unmet needs.
  • Biologicals and biosimilars: With complex claims on biologic drugs.
  • Combination therapies: Drug combinations extending patent life.

Relevant to EP4223747, the landscape likely includes patents on:

  • Analogous compounds with similar structures.
  • Therapeutic methods targeting specific diseases (e.g., oncology, neurology).
  • Formulations with enhanced stability or bioavailability.

2. Existing Patent Families and Competitor Portfolio

Analysis indicates that the patent family associated with similar compounds spans multiple jurisdictions, including the US, China, and Japan, offering broad territorial coverage. Competitors have filed divisional and continuation applications, indicating ongoing strategies to extend patent protection.

Similarly, overlapping patents on derivatives or salts demonstrate a fragmented landscape, demanding precise claim drafting to carve out enforceable rights.

3. Patent Term and Potential Challenges

The patent term, typically 20 years from the priority date, positions EP4223747 as a potentially valuable asset. However, challenges to patentability could arise from:

  • Lack of inventive activity: if prior art anticipates similar compounds.
  • Insufficient disclosure: if claims extend beyond the original invention.
  • Obvious modifications: to minor structural features.

Key Considerations for Stakeholders

  • The breadth of EP4223747's claims will directly impact freedom-to-operate (FTO) analysis.
  • Ongoing patent filings in key jurisdictions suggest active efforts to protect similar inventions.
  • Competitors with overlapping portfolios can pose litigation risks or licensing opportunities.

Conclusion

EP4223747 exemplifies targeted innovation within the pharmaceutical sector, with its scope primarily defined by the strategic framing of claims. Its potential breadth hinges upon the language used in the claims and their support within the patent specification. The surrounding patent landscape is intricate, characterized by multiple filings protecting similar compounds, combinations, and formulations. Stakeholders must analyze both the constructed claims and the competitive patent environment to craft effective FTO strategies, licensing opportunities, and R&D planning.


Key Takeaways

  • The patent’s value depends on the breadth and clarity of its independent claims; broad claims offer stronger protection but are more vulnerable to legal challenges.
  • A thorough landscape review reveals active competition in the molecular class, with overlapping patents covering similar compounds and uses.
  • Protecting additional embodiments through dependent claims can enhance patent robustness and prevent easy circumvention.
  • Navigating the patent landscape requires vigilance, as competitors' filings may impact enforceability and licensing strategies.
  • Regular updates on patent opposition proceedings and family extensions are essential to maintaining patent strength and market exclusivity.

FAQs

Q1: How does the scope of claims in EP4223747 influence its enforceability?
The scope determines how easily competitors can design around the patent. Broader independent claims provide wider protection but risk issues during patent examination, while narrower claims are easier to defend but offer limited coverage.

Q2: What are common challenges faced during patent prosecution of pharmaceutical inventions like EP4223747?
Challenges include demonstrating inventive step over prior art, providing sufficient disclosure, and drafting claims compatible with European patent law. The patent must clearly define the inventive aspects without encompassing prior known compounds.

Q3: How does the patent landscape impact licensing opportunities for similar drugs?
An overlapping patent landscape can facilitate licensing, especially if patents cover key compounds or methods. Conversely, overlapping strong patents can create barriers, requiring careful FTO analysis before R&D investments.

Q4: Can the claims in EP4223747 be modified post-grant to extend protection?
While post-grant amendments are possible, they are limited and must not broaden the scope beyond the original disclosure. Strategic continuation or divisional filings may be pursued to extend coverage or cover additional embodiments.

Q5: How does the patent term impact the commercial viability of the invention?
Typically, a 20-year term from priority grants exclusivity, but it can be shortened by patent term adjustments or extensions. The timing of market entry relative to patent expiry is critical for optimizing commercial returns.


References

  1. European Patent Office, EP4223747 patent document, full specifications, claims, and prosecution history.
  2. Patent landscape analyses and competitive intelligence reports for pharmaceutical patents, accessible via patent databases and industry publications.

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