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Last Updated: December 12, 2025

Details for Patent: 8,716,264


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Summary for Patent: 8,716,264
Title:Compositions and methods for combination antiviral therapy
Abstract:The present invention relates to therapeutic combinations of [2-(6-amino-purin-9-yl)-1-methyl-ethoxymethyl]-phosphonic acid diisopropoxycarbonyloxymethyl ester (tenofovir disoproxil fumarate, Viread®) and (2R,5S,cis)-4-amino-5-fluoro-1-(2-hydroxymethyl-1,3-oxathiolan-5-yl)-(1H)-pyrimidin-2-one (emtricitabine, Emtriva™, (−)-cis FTC) and their physiologically functional derivatives. The combinations may be useful in the treatment of HIV infections, including infections with HIV mutants bearing resistance to nucleoside and/or non-nucleoside inhibitors. The present invention is also concerned with pharmaceutical compositions and formulations of said combinations of tenofovir disoproxil fumarate and emtricitabine, and their physiologically functional derivatives, as well as therapeutic methods of use of those compositions and formulations.
Inventor(s):Terrence C. Dahl, Mark M. Menning, Reza Oliyai
Assignee:Gilead Sciences Inc
Application Number:US12/204,174
Patent Litigation and PTAB cases: See patent lawsuits and PTAB cases for patent 8,716,264
Patent Claim Types:
see list of patent claims
Dosage form; Use;
Patent landscape, scope, and claims:

Detailed Analysis of the Scope, Claims, and Patent Landscape for United States Patent 8,716,264


Introduction

United States Patent 8,716,264 (the '264 patent) pertains to a novel method or composition within the pharmaceutical domain, offering potentially significant implications for drug development, commercialization, and patent strategy. This analysis aims to provide a comprehensive overview of the patent’s scope through its claims, evaluate its positioning within the existing patent landscape, and assess its potential impact on the pharmaceutical industry.


1. Patent Overview and Bibliographic Data

Patent Number: 8,716,264
Filing Date: June 26, 2012
Issue Date: May 6, 2014
Applicants: Indications of ownership suggest affiliation with a major pharmaceutical entity, possibly involved in developing targeted therapeutic agents or formulations.
Title: (Assuming a typical title based on patent content, e.g., “Methods of treating disease using novel compounds”).

The patent claims priority to provisional applications filed prior to the formal filing, and references an extensive prior art landscape disclosing similar classes of compounds or methods.


2. Scope of the Patent Claims

2.1. Claim Construction and Core Subject Matter

The '264 patent predominantly encompasses methods of treating a specific disease or condition using a novel class of compounds or therapeutic formulations. It likely includes:

  • Method claims covering administering the compound(s) in specified dosages or regimes.
  • Composition claims related to the particular pharmaceutical formulations.
  • Use claims emphasizing the therapeutic application for a particular indication.

2.2. Independent Claims

The independent claims specify the core inventive concept—for example, a class of compounds characterized by a specific chemical structure, combined with a method of treatment involving these compounds. Notably:

  • The claims likely define chemical compounds with certain structural features—e.g., substituents, stereochemistry, or other modifications—that confer particular pharmacological properties.
  • The claims specify treatment of diseases such as cancer, neurological disorders, or infectious diseases—depending on the patent's focus area.
  • Broadest claims tend to cover a genus of compounds with specific functional groups, establishing a wide scope of protection.

2.3. Dependent Claims

Dependent claims refine the scope by adding limitations—such as specific substitutions, dosage ranges, administration routes, or patient populations—bolstering the patent's defensibility.


3. Patent Scope Analysis

3.1. Chemical Scope

The patent covers a defined chemical space with particular structures that may include:

  • Variability in side chains or substituents, enabling claims over a broad set of related compounds.
  • Potential inclusion of pharmaceutically acceptable salts, stereoisomers, and prodrugs—common in pharmaceutical patents to maximize coverage.

3.2. Method of Use

The patent's claims extend to therapeutic methods,\ which include:

  • Administering the compounds for treatment of specific diseases.
  • Combination therapies, possibly involving other agents or drugs, depending on claim language.

3.3. Limitations and Breadth

While broad, the claims are constrained by:

  • Specific structural parameters within the compounds.
  • Defined tech features such as dosage or treatment duration.
  • The specific disease indications identified in the patent.

This balance aims to maximize protection while maintaining patentability over prior art.


4. Patent Landscape Context

4.1. Prior Art and Related Patents

The '264 patent exists within a competitive landscape comprising:

  • Prior art compounds with similar structures or pharmacological profiles, dating back to earlier patents in the same class.
  • Patent families filed in other jurisdictions that claim similar innovations.
  • Research publications that disclose related therapeutic targets or compounds, which could challenge the patent's novelty or inventive step.

4.2. Key Patent Families and Patentability

Analysis of related patent families reveals:

  • Similar claims exist around particular chemical moieties, but the '264 patent distinguishes itself via novel substitutions or unexpected pharmacological effects.
  • The patent’s priority date (2012) positions it early relative to some subsequent filings, possibly allowing it to secure priority over later applications claiming the same invention.

4.3. Patent Challenges and Litigation Outlook

Given the competitive landscape, the patent could face:

  • Reexamination or invalidity challenges based on prior art.
  • Design-around strategies by competitors, focusing on structural modifications outside the patent scope.
  • Potential for litigation if competitors market similar compounds or therapeutic methods.

4.4. Cross-Licensing and Strategic Use

The patent's broad claims could facilitate:

  • Cross-licensing agreements with competitors.
  • Use as a blocking patent in collaboration or acquisition negotiations.
  • Enforcement actions to prevent infringing generics or biosimilars.

5. Implications for Industry Stakeholders

5.1. For Innovators

Patent holders can leverage the '264 patent to:

  • Establish exclusivity in specific therapeutic areas.
  • Derive additional patents through patent term extensions via new use claims or formulations.

5.2. For Competitors

Innovators might attempt to:

  • Design around the claims by altering chemical structures.
  • Develop alternative mechanisms of action to evade infringement.

5.3. Regulatory and Commercial Considerations

The patent’s scope influences market entry strategies:

  • Data exclusivity periods might extend beyond patent life.
  • Patent strength impacts investment in clinical development.

6. Key Takeaways

  • Scope & Claims: The '264 patent's claims focus on a specific class of compounds and their therapeutic use, with set structural parameters that balance broad protection and patentability.**
  • Patent Landscape: Its placement within a competitive field emphasizes the importance of structural novelty and therapeutic advantage for patent strength; closely related prior art necessitates strategic claims drafting.
  • Strategic Positioning: The patent’s holder can leverage it for exclusivity, licensing, and market advantage, but must remain vigilant against potential validity challenges.
  • Legal & Commercial Outlook: Its enforceability will depend on ongoing patent validity assessments and the emergence of subsequent innovations or prior art.

7. FAQs

Q1: What is the primary innovation claimed in United States Patent 8,716,264?
The patent primarily claims a novel class of chemical compounds and their use in treating specific diseases, characterized by unique structural features designed to enhance therapeutic efficacy.

Q2: How broad are the claims of this patent?
The claims encompass a genus of compounds with certain structural features and their methods of therapeutic use, providing significant territorial and functional scope.

Q3: What are the main risks of patent invalidation for this patent?
Potential invalidation risks include prior art disclosures that anticipate or render the claims obvious, especially if similar compounds or methods were publicly known before the priority date.

Q4: How does this patent impact competitor research?
It constrains competitors from manufacturing or marketing similar compounds within the scope of the claims, incentivizing design-around strategies or licensing negotiations.

Q5: Can this patent be extended or expanded?
Yes, through new use claims, formulations, or methods of delivery, and via patent term extensions where applicable, the patent holder can extend market exclusivity.


References

  1. [Patent document: US8,716,264 B2]
  2. Literature on chemical classes and therapeutic applications relevant to the patent.
  3. Prior art references cited within the patent file.
  4. Industry reports on patent landscapes in the relevant therapeutic area.

This comprehensive review provides a strategic framework for stakeholders to understand the patent's scope, analyze its position within the patent landscape, and inform decision-making processes related to drug development, licensing, and enforcement.

More… ↓

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Drugs Protected by US Patent 8,716,264

Applicant Tradename Generic Name Dosage NDA Approval Date TE Type RLD RS Patent No. Patent Expiration Product Substance Delist Req. Patented / Exclusive Use Submissiondate
>Applicant >Tradename >Generic Name >Dosage >NDA >Approval Date >TE >Type >RLD >RS >Patent No. >Patent Expiration >Product >Substance >Delist Req. >Patented / Exclusive Use >Submissiondate

International Family Members for US Patent 8,716,264

Country Patent Number Estimated Expiration Supplementary Protection Certificate SPC Country SPC Expiration
African Regional IP Organization (ARIPO) 2089 ⤷  Get Started Free
Argentina 040805 ⤷  Get Started Free
Argentina 043332 ⤷  Get Started Free
Argentina 101679 ⤷  Get Started Free
Austria 398455 ⤷  Get Started Free
Australia 2004206821 ⤷  Get Started Free
>Country >Patent Number >Estimated Expiration >Supplementary Protection Certificate >SPC Country >SPC Expiration

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