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Last Updated: April 8, 2025

Details for Patent: 10,259,791


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Which drugs does patent 10,259,791 protect, and when does it expire?

Patent 10,259,791 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 thirty-nine patent family members in twenty-four countries.

Summary for Patent: 10,259,791
Title:High-purity quinoline derivative and method for manufacturing same
Abstract: Provided is a compound represented by formula (IV) or a salt thereof, wherein the content of the compound represented by formula (I) is 350 ppm by mass or less. ##STR00001##
Inventor(s): Nakamura; Taiju (Kamisu, JP), Abe; Taichi (Kamisu, JP), Miyashita; Yusuke (Kamisu, JP), Kuroda; Hirofumi (Kamisu, JP), Ayata; Yusuke (Kamisu, JP), Akao; Atsushi (Kamisu, JP)
Assignee: Eisai R&D Management Co., Ltd. (Tokyo, JP)
Application Number:15/503,108
Patent Litigation and PTAB cases: See patent lawsuits and PTAB cases for patent 10,259,791
Patent Claim Types:
see list of patent claims
Use; Formulation; Compound;
Patent landscape, scope, and claims:

Understanding the Scope and Claims of United States Patent 10,259,791

To delve into the specifics of United States Patent 10,259,791, it is crucial to break down the components of the patent document and analyze the patent landscape in which it resides.

Patent Document Anatomy

Patent Identifier

The patent identifier for U.S. Patent 10,259,791 follows the standard format:

  • US = country code
  • 10,259,791 = unique identifier assigned to the granted patent
  • B2 (if applicable) = kind code indicating the status of the patent document. However, the specific kind code for this patent is not provided in the sources, but it would typically be B2 if an application was previously published[1].

Abstract and Summary

The abstract provides a one-paragraph description of the invention, giving a brief overview of what the patent covers. This section is crucial for quickly understanding the essence of the patented invention[1].

Description of the Invention

The description section is divided into several parts:

  • Background: This section typically discusses the existing need or market for the invention and may reference prior art.
  • Summary: A brief description of the invention.
  • Detailed Description: This section includes all the details about the structure and functionality of the invention. It often refers to the drawings and explains how the invention operates[1].

Claims

The claims section is the most critical part of the patent, as it defines the scope of the patent protection. Claims are legalistic and detailed, outlining what is protected by the patent. They are divided into independent and dependent claims, allowing for a detailed elaboration of specific aspects of the invention without redundant restatement[1].

Claims Analysis for U.S. Patent 10,259,791

Claim Construction

Claim construction is a legal process where the court interprets the meaning of the claims to determine the scope of the patent protection. This is a critical step in assessing patent infringement or validity. The court decides claim construction as a matter of law, and the words of a claim are generally given their ordinary and customary meaning[2].

Importance of Claims

The claims in U.S. Patent 10,259,791 would set out what is specifically protected by the patent. Potential infringement is evaluated based on whether an invention has all the elements of a single claim or if it has overall similarity to the description in the claims. The claims section would begin with a phrase such as “what is claimed is” and enumerate the scope of the patent protection in detail[1].

Patent Landscape and Trends

General Patent Landscape

The patent landscape for U.S. Patent 10,259,791 involves understanding the broader context of patent filings and issuances in its relevant field. For instance, if the patent pertains to a specific technology like blockchain, it would be part of a larger trend where thousands of blockchain-related patents have been filed and issued over the past decade[3].

Blockchain Patent Landscape (If Applicable)

If U.S. Patent 10,259,791 pertains to blockchain technology, it would be part of a significant trend. Between 2013 and 2023, over 13,854 blockchain patent applications were filed, with nearly 9,442 patents granted. Companies like Advanced New Technologies, IBM, and Bank of America are among the top holders of blockchain patents[3].

Legal Standards and Infringement

Claim Construction and Infringement Analysis

The legal standards for claim construction and infringement analysis are crucial. The court must first construe the claims to understand the scope of the patent protection before analyzing infringement. This process is outlined in cases such as Markman v. Westview Instruments, Inc. and Phillips v. AWH Corp.[2].

Case Example

In the context of U.S. Patent 10,259,791, if there were legal proceedings, the court would follow a similar process. For example, in a consolidated case involving multiple patents, the court would first address claim construction before analyzing infringement and validity. This is evident in cases where multiple actions are consolidated for pre-trial purposes, and the court must decide on claim construction as a matter of law[2].

Practical Implications

Drafting Patent Applications

For patents like U.S. Patent 10,259,791, it is essential to draft the application carefully, ensuring that the claims are clear and the description is detailed. This involves conducting thorough prior art searches and ensuring that the application meets the requirements set by the USPTO, such as describing the best mode of carrying out the invention and explaining the specific improvement[5].

Seeking Professional Help

Inventors often employ the services of registered patent practitioners to help draft the patent application and navigate the examination process. Programs like the Patent Pro Bono Program can also provide free legal assistance to financially underresourced inventors and small businesses[5].

Key Takeaways

  • Patent Document Structure: Understand the components of a patent document, including the abstract, description, and claims.
  • Claims Analysis: Claims define the scope of patent protection and are crucial for determining infringement.
  • Patent Landscape: The broader patent landscape, including trends in filings and issuances, can provide context for the significance of a patent.
  • Legal Standards: Claim construction and infringement analysis are critical legal steps in patent litigation.
  • Practical Implications: Careful drafting of patent applications and seeking professional help are essential for securing strong patent protection.

Frequently Asked Questions (FAQs)

1. What is the significance of the claims section in a patent document?

The claims section is the most important part of a patent document as it defines the scope of the patent protection and outlines what is protected by the patent.

2. How is claim construction determined in patent litigation?

Claim construction is determined by the court as a matter of law, where the words of a claim are generally given their ordinary and customary meaning.

3. What is the current trend in blockchain patent filings and issuances?

Between 2013 and 2023, over 13,854 blockchain patent applications were filed, with nearly 9,442 patents granted, indicating a significant increase in blockchain-related patent activity.

4. Why is it important to conduct a thorough prior art search when drafting a patent application?

Conducting a thorough prior art search helps ensure that the invention is novel and non-obvious, which are key requirements for patentability.

5. What resources are available for financially underresourced inventors and small businesses to obtain patent protection?

The Patent Pro Bono Program matches volunteer patent professionals with financially underresourced inventors and small businesses to provide them with patent protection services.

Cited Sources:

  1. Lesson 3: Parts of a Patent | UW-Madison Libraries
  2. Case 1:19-cv-19998-CPO-AMD Document 196 Filed 05/08/23 Page ...
  3. Is Your Blockchain Invention Patentable? - Mintz
  4. Records of the Patent and Trademark office - National Archives
  5. Applying for Patents - USPTO

More… ↓

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Drugs Protected by US Patent 10,259,791

ApplicantTradenameGeneric NameDosageNDAApproval DateTETypeRLDRSPatent No.Patent ExpirationProductSubstanceDelist Req.Patented / Exclusive UseSubmissiondate
Eisai Inc LENVIMA lenvatinib mesylate CAPSULE;ORAL 206947-001 Feb 13, 2015 RX Yes No 10,259,791*PED ⤷  Try for Free Y ⤷  Try for Free
Eisai Inc LENVIMA lenvatinib mesylate CAPSULE;ORAL 206947-002 Feb 13, 2015 RX Yes Yes 10,259,791*PED ⤷  Try for Free Y ⤷  Try for 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
Showing 1 to 2 of 2 entries

Foreign Priority and PCT Information for Patent: 10,259,791

Foriegn Application Priority Data
Foreign Country Foreign Patent Number Foreign Patent Date
Japan2014-174062Aug 28, 2014
Japan2015-034729Feb 25, 2015
PCT Information
PCT FiledAugust 26, 2015PCT Application Number:PCT/JP2015/073946
PCT Publication Date:March 03, 2016PCT Publication Number: WO2016/031841

International Family Members for US Patent 10,259,791

CountryPatent NumberEstimated ExpirationSupplementary Protection CertificateSPC CountrySPC Expiration
Argentina 101695 ⤷  Try for Free
Australia 2015309862 ⤷  Try for Free
Brazil 112017002827 ⤷  Try for Free
>Country>Patent Number>Estimated Expiration>Supplementary Protection Certificate>SPC Country>SPC Expiration
Showing 1 to 3 of 3 entries

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