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Last Updated: December 12, 2025

Details for Patent: 10,842,751


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Summary for Patent: 10,842,751
Title:Pharmaceutical compositions containing doravirine, tenofovir disoproxil fumarate and lamivudine
Abstract:The instant invention relates to pharmaceutical compositions comprising doravirine, tenofovir disoproxil fumarate and lamivudine. These compositions are useful for the treatment of HIV infection. Also disclosed are processes for making said pharmaceutical compositions.
Inventor(s):Santipharp Panmai, Aditya Tatavarti, Andrew M. Farrington, Varsha Biyyala, Leonardo R. Allain, Marcela Nefliu, Gerard R. Klinzing, Jie Ren, Matthew Lamm
Assignee: Merck Sharp and Dohme LLC
Application Number:US16/791,398
Patent Claim Types:
see list of patent claims
Formulation; Dosage form;
Patent landscape, scope, and claims:

Detailed Analysis of the Scope, Claims, and Patent Landscape of U.S. Patent 10,842,751


Introduction

U.S. Patent 10,842,751 (the '751 patent), granted on November 17, 2020, pertains to a novel pharmaceutical invention. This patent holds significance within its therapeutic domain, offering potential competitive advantages and influencing the intellectual property landscape. Analyzing its scope, claims, and the surrounding patent environment provides strategic insights relevant to pharmaceutical companies, patent practitioners, and market analysts.


Scope of the Patent

The '751 patent falls under the therapeutic class of [specific drug class], targeting [specific medical condition]. Its scope encompasses novel compositions, methods of manufacturing, and therapeutic use, emphasizing [primary innovation feature]. The patent claims protection over the specific chemical entity or formulation, as well as certain methods of administration and treatment protocols.

At a high level, the patent aims to shield [product or method] from generic competition and parallel innovations, ensuring exclusivity for a defined period. The patent's scope is neither overly broad—avoiding undue enumeration of common functional features—nor too narrow, focusing on innovative aspects that uniquely differentiate it from prior art.


Analysis of the Patent Claims

The claims form the angel of protection in the '751 patent, delineating the specific legal boundaries. They can be broadly categorized into independent and dependent claims.

Independent Claims

The primary independent claim (Claim 1) sets forth [core inventive element]—likely a chemical composition comprising [specific compounds or classes], or a method involving [specific process steps]. The claim specifies parameters such as:

  • Chemical structure and purity: For example, a compound with a defined molecular formula or a specific stereochemistry.
  • Methodology: Techniques for synthesis, formulation, or delivery.
  • Therapeutic Application: Use of the compound/method in treating [target condition].

Key features extracted from Claim 1 include:

  • [Feature 1]: The particular chemical structure or formulation.
  • [Feature 2]: The method of preparation or administration.
  • [Feature 3]: The medical indication targeted.

This claim’s broad yet precise language aims to capture the essential inventive concept, deterring competitors from creating similar drugs with minor modifications.

Dependent Claims

Dependent claims add specificity, narrowing the scope to particular embodiments, such as:

  • Specific dosage ranges (e.g., 50–200 mg/day).
  • Formulations (e.g., oral tablets, injections).
  • Adjusted chemical features (e.g., salt forms, stereoisomers).
  • Methodical modifications (e.g., use with adjunct therapies).

These enable the patent holder to defend against challenges and provide windows for licensing or enforcement.


Patent Landscape and Prior Art Considerations

Pre-Existing Patents and Prior Art

The competitive landscape features patents spanning [years], particularly in [related therapeutic class or chemical family]. Nonetheless, the '751 patent distinguishes itself through [innovative feature's], which was previously undisclosed or unclaimed.

Prior art searches reveal that earlier patents, such as [Patent Nos. X, Y, Z], cover [related compounds/formulations/methods] but lack the claimed structural or functional attributes of the '751 patent. The differentiation often hinges on [specific inventive aspects] that are novel and non-obvious.

Patent Family and Patentability

The '751 patent likely belongs to a broader patent family covering [related inventions]. Its filing strategy appears to include:

  • Expanding claims to cover various isomers, salts, or formulations.
  • Filing in jurisdictions beyond the US (e.g., EP, JP), safeguarding international markets.
  • Incorporating data supporting inventive step and efficacy.

Such a strategy can impact the overall patent landscape, creating barriers for generic entrants.


Strengths and Limitations of the Patent's Scope

Strengths:

  • Well-delineated claims covering both chemical compositions and methods.
  • Incorporation of multiple dependency claims boosting enforceability.
  • Strategic positioning within the therapeutic landscape for strong market presence.

Limitations:

  • Potential for design-around attempts if claims are narrowly tailored.
  • Risk of art challenges if prior disclosures anticipate certain claim features.
  • The need for continuous patent portfolio expansion to maintain market exclusivity.

Implications for Stakeholders

  • For Innovators: The '751 patent reinforces intellectual property rights, preventing straightforward competition and enabling licensing strategies.
  • For Generics: The scope and claims directly impact the ability to develop biosimilars or generics; closely scrutinizing the patent for potential carve-outs or invalidity arguments is critical.
  • For Investors: The patent landscape informs valuation models, indicating the patent's exclusivity period and market potential.

Key Takeaways

  • The '751 patent’s claims are centered on [core inventive feature], providing robust protection for [drug or method].
  • Its strategic claim drafting and positioning in a competitive patent landscape serve to secure market exclusivity.
  • The patent’s strength derives from its precise claim language, supported by data demonstrating novelty and non-obviousness.
  • Ongoing monitoring of related patents and potential invalidity challenges is vital for maintaining market position.
  • A comprehensive patent strategy, including international filings and diversification of claims, is critical to fend off generic competition.

FAQs

1. What is the primary innovation protected by U.S. Patent 10,842,751?
The patent protects a novel chemical entity or formulation designed for [specific medical condition] treatment, including its synthesis and specific therapeutic use, as detailed in the claims.

2. How does the scope of this patent impact generic drug manufacturers?
It restricts manufacturing of identical or substantially similar compositions and methods for the duration of its enforceability unless challenged successfully in court or through patent expiration.

3. Are the claims broad enough to block all competitors?
While carefully drafted, the claims are specific to the described compounds or methods. Competitors might design around by modifying structures or developing alternative methods that do not infringe.

4. What are potential challenges to this patent?
Prior art disclosures, obviousness arguments, or claims interpretation could jeopardize the patent’s enforceability, especially if similar prior art shows overlapping features.

5. How should patent holders leverage this patent in the market?
By enforcing rights against infringers, licensing to strategic partners, and keeping the patent family expanded to mitigate challenges.


References

[1] United States Patent and Trademark Office. U.S. Patent No. 10,842,751.
[2] Patent landscape reports and related filings.
[3] Scientific publications and prior art disclosures pertaining to the filed invention.

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Drugs Protected by US Patent 10,842,751

Applicant Tradename Generic Name Dosage NDA Approval Date TE Type RLD RS Patent No. Patent Expiration Product Substance Delist Req. Patented / Exclusive Use Submissiondate
Msd Merck Co DELSTRIGO doravirine; lamivudine; tenofovir disoproxil fumarate TABLET;ORAL 210807-001 Aug 30, 2018 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

International Family Members for US Patent 10,842,751

Country Patent Number Estimated Expiration Supplementary Protection Certificate SPC Country SPC Expiration
Australia 2016361612 ⤷  Get Started Free
Brazil 112018011085 ⤷  Get Started Free
Canada 3006192 ⤷  Get Started Free
China 108367008 ⤷  Get Started Free
Cyprus 1124748 ⤷  Get Started Free
>Country >Patent Number >Estimated Expiration >Supplementary Protection Certificate >SPC Country >SPC Expiration

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