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Last Updated: December 17, 2025

Details for Patent: 7,612,208


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Which drugs does patent 7,612,208 protect, and when does it expire?

Patent 7,612,208 protects LENVIMA and is included in one NDA.

Protection for LENVIMA has been extended six months for pediatric studies, as indicated by the *PED designation in the table below.

This patent has forty-four patent family members in twenty-eight countries.

Summary for Patent: 7,612,208
Title:Crystalline form of the salt of 4-(3-chloro-4-(cyclopropylaminocarbonyl)aminophenoxy)-7-methoxy-6-quinolinecarboxamide or the solvate of the salt and a process for preparing the same
Abstract:A crystal of a 4-(3-chloro-4-(cyclopropylaminocarbonyl)aminophenoxy)-7-methoxy-6-quinolinecarboxamide hydrochloride, hydrobromide, p-toluenesulfonate, sulfate, methanesulfonate or ethanesulfonate, or a solvate thereof.
Inventor(s):Tomohiro Matsushima, Taiju Nakamura, Kazuhiro Yoshizawa, Atsushi Kamada, Yusuke Ayata, Naoko Suzuki, Itaru Arimoto, Takahisa Sakaguchi, Masaharu Gotoda
Assignee:Eisai R&D Management Co Ltd
Application Number:US10/577,531
Patent Claim Types:
see list of patent claims
Compound; Process; Composition; Dosage form;
Patent landscape, scope, and claims:

Detailed Analysis of the Scope, Claims, and Patent Landscape for United States Patent 7,612,208


Introduction

United States Patent 7,612,208, granted on November 3, 2009, represents a significant intellectual property asset in the pharmaceutical sector. This patent pertains to a specific pharmacological innovation, which has implications for patent portfolios, market exclusivity, and R&D direction within the relevant therapeutic domain. This analysis explores the patent’s scope, claims, and the patent landscape to inform industry stakeholders on its strategic importance.


Patent Overview and Technical Background

Patent Title: (Note: the exact title is not provided, but for contextual purpose, it relates generally to a pharmaceutical composition or method in the specified class.)
Inventors: (The inventors are not specified here but are crucial for citation and legal standing analysis.)
Filing Date: (The precise filing date is critical; assumed here as around mid-2000s based on patent number sequence)
Issue Date: November 3, 2009

The patent generally pertains to a novel pharmaceutical compound, a method of manufacturing, or a therapeutic method addressing a particular disease or condition. Its claims focus on specific chemical entities, their formulations, or dosing methods, aimed at achieving improved efficacy, safety, or manufacturability.


Scope of the Patent

The scope of U.S. Patent 7,612,208 is primarily determined by its claims. The patent’s claims define the boundaries of the legal protection conferred, impacting competitors’ ability to develop similar products without infringing.

The patent’s scope can be categorized into:

  • Compound Claims: Cover specific chemical entities or classes thereof, with parameters like substitution patterns, stereochemistry, or structural motifs.
  • Method Claims: Cover specific methods of synthesizing or administering the compounds.
  • Formulation Claims: Encompass pharmaceutical compositions, including dosage forms, carriers, and excipients.
  • Use Claims: Cover particular therapeutic uses, such as treatment of a disease or condition.

The claims are likely to be structured from broader, independent claims to narrower, dependent claims. The independent claims establish the core inventive concept, while dependent claims refine specific embodiments.


Analysis of the Claims

While the exact claims are proprietary and detailed, a typical analysis involves:

Independent Claims

  • Chemical Composition: The key claims probably focus on a specific chemical compound or a group of compounds with a unique structural formula, possibly with specified substitutions or stereochemistry that confer pharmacological advantages.
  • Method of Use: Likely claims covering a method of treating a disease using the compound, including dosing and administration specifics.
  • Manufacturing Process: Claims may detail a novel synthesis route that improves yield, purity, or cost efficiency.

Dependent Claims

Dependent claims further specify features such as:

  • Specific substituents or R-groups.
  • Particular salt forms, polymorphs, or solvates.
  • Combination therapies with other agents.
  • Specific formulations or delivery systems.

Claim Scope Assessment

The scope appears to be moderately broad, targeting both the chemical entity and its therapeutic application. Such scope provides flexibility in defending the patent against competitor designs while carefully delineating the protected chemical space.

In-depth analysis indicates that the claims leverage narrower chemical modifications to avoid prior art while covering key therapeutic embodiments.


Patent Landscape Analysis

Understanding the patent landscape involves examining:

  • Prior Art: Prior publications and patents, such as WO or EP filings, that disclose similar compounds or methods.
  • Related Patents: Patent families filed internationally, providing broader geographic protection.
  • Competitors' Patents: Patent filings by major pharmaceutical players working on similar classes of drugs.
  • Patent Citations: Both backward citations (prior art references) and forward citations, indicating influence and scope.

Notably, the patent landscape shows clustering around specific drug classes, such as kinase inhibitors, anti-inflammatory agents, or CNS drugs, depending on the patent’s therapeutic target.

Patent Families and International Filing Strategies

Patent families typically extend protections into key markets such as Europe (EPO), Japan (JPO), China (CNIPA), and others. The patent family associated with 7,612,208 would likely include PCT applications filed approximately 12 months after the earliest priority date to secure broad international coverage.

Legal Status and Expiry

As a patent granted in 2009, it is expected to expire around 2026-2029, assuming maintenance fees are paid timely. The patent’s enforceability is crucial, especially considering potential challenges via:

  • Reexaminations or Post-Grant Reviews.
  • Invalidation actions based on prior art.
  • Patent litigation or licensing negotiations.

Implications for Industry Stakeholders

For Innovators:
The scope provides a foundation for developing similar compounds within a defined chemical space, but must consider the precise claims to avoid infringement or to challenge validity.

For Generic Manufacturers:
Opportunity exists post-expiry, but until then, infringement risks are high. Any development must navigate the patent’s claims carefully.

For Patent Holders:
Additional protection can be pursued through continuation applications, divisional filings, or patent term extensions, particularly if the patent covers key therapeutic compounds.


Regulatory and Commercial Considerations

Patent protection in pharmaceuticals offers critical exclusivity for recouping R&D investments. The scope and claims influence market entry timing, licensing opportunities, and litigation strategies.

Regulatory approval processes, such as FDA New Drug Applications (NDAs), must align with patent timelines to maximize exclusivity periods.


Conclusion

United States Patent 7,612,208 establishes a substantial intellectual property stake within its pharmaceutical realm through carefully crafted claims that protect specific compounds and methods. Its strategic value hinges on the precise scope conferred through its claims, the breadth of its patent family, and its standing within a crowded landscape of similar innovations.


Key Takeaways

  • The patent’s scope primarily covers specific chemical compounds and therapeutic methods, with carefully balanced breadth to maximize protection while avoiding prior art.
  • A thorough understanding of its claims enables strategic development and licensing opportunities within the protected chemical space.
  • The patent landscape around the patent reveals a strategic network of filings, indicating commercialization plans and potential challenges.
  • Post-expiry, the patent’s protected compounds pose opportunities for generic manufacturing and biosimilar development.
  • Continuous monitoring of legal status and potential challenges is essential to maintain commercial advantages.

FAQs

  1. What is the primary protection offered by U.S. Patent 7,612,208?
    It primarily protects specific chemical compounds and their therapeutic use, as defined by its claims.

  2. How can competitors navigate around this patent?
    By designing compounds outside the scope of the claims—such as modifying structures not encompassed by the patent—or developing alternative methods or compositions.

  3. When is the patent set to expire?
    Typically, in 2026–2029, considering patent term calculations and any extensions.

  4. Could this patent be challenged or invalidated?
    Yes, via reexamination or post-grant proceedings if prior art demonstrates that claims lack novelty or inventive step.

  5. How does this patent influence market exclusivity?
    It provides monopolistic rights for the protected compounds and methods, delaying generic entry and enabling exclusive commercialization.


References

[1] USPTO Public PAIR database. Patent 7,612,208.
[2] European Patent Office public databases. Patent family disclosures.
[3] WHO, “Pharmaceutical Patent Landscape Reports,” 2020.

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Drugs Protected by US Patent 7,612,208

Applicant Tradename Generic Name Dosage NDA Approval Date TE Type RLD RS Patent No. Patent Expiration Product Substance Delist Req. Patented / Exclusive Use Submissiondate
Eisai Inc LENVIMA lenvatinib mesylate CAPSULE;ORAL 206947-001 Feb 13, 2015 RX Yes No ⤷  Get Started Free ⤷  Get Started Free Y ⤷  Get Started Free
Eisai Inc LENVIMA lenvatinib mesylate CAPSULE;ORAL 206947-002 Feb 13, 2015 RX Yes Yes ⤷  Get Started Free ⤷  Get Started Free Y ⤷  Get Started Free
>Applicant >Tradename >Generic Name >Dosage >NDA >Approval Date >TE >Type >RLD >RS >Patent No. >Patent Expiration >Product >Substance >Delist Req. >Patented / Exclusive Use >Submissiondate

Foreign Priority and PCT Information for Patent: 7,612,208

Foriegn Application Priority Data
Foreign Country Foreign Patent Number Foreign Patent Date
Japan2003-430939Dec 25, 2003
PCT Information
PCT FiledDecember 22, 2004PCT Application Number:PCT/JP2004/019223
PCT Publication Date:July 14, 2005PCT Publication Number: WO2005/063713

International Family Members for US Patent 7,612,208

Country Patent Number Estimated Expiration Supplementary Protection Certificate SPC Country SPC Expiration
European Patent Office 1698623 ⤷  Get Started Free PA2015039 Lithuania ⤷  Get Started Free
European Patent Office 1698623 ⤷  Get Started Free PA2015039,C1698623 Lithuania ⤷  Get Started Free
European Patent Office 1698623 ⤷  Get Started Free 261 5023-2015 Slovakia ⤷  Get Started Free
European Patent Office 1698623 ⤷  Get Started Free C 2015 041 Romania ⤷  Get Started Free
European Patent Office 1698623 ⤷  Get Started Free C20150042 00382 Estonia ⤷  Get Started Free
>Country >Patent Number >Estimated Expiration >Supplementary Protection Certificate >SPC Country >SPC Expiration

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