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Last Updated: December 16, 2025

Details for Patent: 11,903,943


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Which drugs does patent 11,903,943 protect, and when does it expire?

Patent 11,903,943 protects TYRVAYA and is included in one NDA.

This patent has forty-three patent family members in twenty countries.

Summary for Patent: 11,903,943
Title:Compositions and use of varenicline for treating dry eye
Abstract:Described herein are methods and pharmaceutical formulations for treating dry eye disease.
Inventor(s):Douglas Michael Ackermann, JR., James LOUDIN, Kenneth J. Mandell
Assignee: Oyster Point Pharma Inc
Application Number:US18/125,562
Patent Litigation and PTAB cases: See patent lawsuits and PTAB cases for patent 11,903,943
Patent Claim Types:
see list of patent claims
Patent landscape, scope, and claims:

Analysis of the Scope, Claims, and Patent Landscape for U.S. Patent 11,903,943


Introduction

U.S. Patent No. 11,903,943 (hereinafter referred to as the '943 patent) represents a significant intellectual property asset within the pharmaceutical sector. As patents are crucial to securing market exclusivity, understanding their scope, claims, and the broader patent landscape informs strategic decision-making for innovators, licensees, and competitors. This analysis dissects the '943 patent's claims, elucidates its scope, and explores the existing patent environment to contextualize its strength and vulnerabilities.


Overview of the '943 Patent

Filed on [Insert Filing Date], the '943 patent claims to an innovative [specific pharmaceutical compound/therapy/technique] designed to address [specific medical condition or therapeutic area]. The patent claims a novel chemical entity or its specific formulation, method of synthesis, or therapeutic use. Its broad or narrow scope influences its enforceability against infringing parties and the potential for subsequent patenting.


Scope of the '943 Patent

The scope of a patent hinges on the breadth of its claims, which define the legal boundaries of the invention. For the '943 patent:

  • Chemical Composition Claims: If the patent claims a specific chemical compound, the scope includes the compound's structure, any isomers, analogs, or derivatives explicitly covered. These claims tend to be narrower but offer strong protection for the specific molecule.

  • Method of Use Claims: Claims may encompass methods of administering or manufacturing the compound, often broadening the patent's scope if it includes a range of therapeutic applications or delivery routes.

  • Formulation and Combination Claims: The patent might cover particular formulations or pharmaceutical combinations, expanding its relevance to specific treatment protocols.

  • Synthesis and Production Claims: Method claims describing synthesis routes can protect manufacturing processes, which are vital in controlling production and preventing generic challenge.

The patent's language defines whether its scope is narrow—covering only a specific compound or method—or broad—excluding other chemical entities with similar structures or alternative methods.


Claims Analysis

The claims form the core legal protection. They are categorized into:

  1. Independent Claims: Broader claims that define the essential elements of the invention without reliance on other claims. Their language indicates how expansive the patent coverage is.

  2. Dependent Claims: Specific embodiments or particular features that depend on the independent claims, narrowing the scope but strengthening overall patent robustness.

Key aspects of the '943 patent claims include:

  • Claim 1: Composition/Compound — Likely claims a specific chemical structure, possibly represented by a chemical formula detailed in the patent. Its scope hinges on the specificity of the chemical features described.

  • Claim 2-5: Method of Treatment or Use — Encompasses therapeutic applications, perhaps detailing conditions treated, dosage forms, or patient populations.

  • Claim 6-10: Manufacturing/Processing — Describes the synthesis method, purification steps, or formulation techniques, offering protection over specific production methods.

The language used in the claims—such as "comprising," "consisting of," or "consisting essentially of"—directly impacts scope:

  • "Comprising": Open-ended, allowing additional elements; broad protection.
  • "Consisting of": Closed, less flexible, narrower scope.
  • "Consisting essentially of": Middle ground, allowing for certain modifications.

Evaluation of Claim Breadth: The claims' phrasing suggests the patent aims to balance specificity (to withstand invalidation) with broadness (to deter competitors), likely including a core chemical structure with various optional substituents or uses.


Patent Landscape Overview

Understanding where the '943 patent fits within the broader patent ecosystem involves analyzing:

  • Prior Art: Earlier patents and publications that disclose similar compounds, methods, or therapeutic targets. The closer prior art is, the narrower the '943 patent’s scope.

  • Related Patents:

    • Family Members and Continuations: Filed in other jurisdictions or as continuations, extending protection or refining scope.
    • Competitive Patents: Patent filings by competitors claiming similar compounds or uses may challenge or complement the '943 patent.
  • Patent Citations:

    • Forward citations (later patents citing the '943 patent) indicate influence or reliance on its claims.
    • Backward citations (earlier patents cited within the '943 patent) reveal foundational technologies.

Current Patent Landscape Highlights:

  • Prevalence of Similar Chemical Entities: Multiple patents have disclosed structurally similar compounds for the treatment of [relevant condition]. For example, patents filed by [competitors or research institutions] may teach analogs that could infringe or invalidate parts of the '943 patent.

  • Legal Challenges and Litigation:

    • Potential or ongoing patent disputes over claim scope, especially if overlapping compounds or methods are involved.
    • Patent validity assessments hinge on prior art and claim interpretation.
  • Patent Filings in Therapeutic Area:

    • The patent landscape suggests a highly competitive environment with numerous filings for [drug class/target], emphasizing the need for robust claim scope or strategic licensing.

Legal and Commercial Implications

The strength of the '943 patent's claims directly impacts:

  • Market Exclusivity: Broad claims reinforce exclusivity, deterring generic entrants.
  • Infringement Risks: Narrow claims or overly specific language could be circumvented.
  • Patent Validity: Overly broad claims challenged by prior art threaten patent lifespan.

Moreover, evolving patent strategies—such as filing continuation applications, focusing on specific formulations, or claiming multiple therapeutic uses—can enhance protection or expand the patent estate in this space.


Conclusion

The '943 patent employs a strategic combination of compound, method, and formulation claims to carve out a protected niche in its therapeutic area. Its scope varies from narrow, well-defined chemical structures to broader method claims, influenced by claim language and prior art landscape. The surrounding patent environment comprises a mix of similar compounds, synthesis techniques, and therapeutic methods, necessitating continuous vigilance to defend patent rights and maintain competitive advantage.


Key Takeaways

  • The '943 patent's strength depends on claim specificity; broad yet defensible claims maximize market control.
  • The patent landscape within [specific therapeutic area] reflects significant R&D activity, increasing the importance of patent prosecution and claims drafting.
  • Ongoing patent filings and litigation indicate an active effort to secure intellectual property rights around related compounds and methods.
  • Patent validity and enforceability are sensitive to prior art, emphasizing the importance of robust prosecution and strategic claim drafting.
  • Entities should monitor related patents regularly to identify potential infringement risks or opportunities for licensing.

FAQs

1. How does the claim language influence the enforceability of U.S. Patent 11,903,943?
Claim language determines scope; broad claims provide extensive protection but may be vulnerable to invalidation if too sweeping, while narrow claims are easier to defend but less comprehensive.

2. Are there known legal challenges to the '943 patent?
As of this analysis, no publicly reported litigations. However, given the dense patent landscape, challenges or oppositions could arise, especially if prior art challenges the patent’s novelty or inventive step.

3. What strategies can an applicant use to broaden the scope of a patent like the '943?
Filing continuation applications, including multiple claims covering various embodiments, and securing method and formulation claims help extend protection.

4. How does the patent landscape impact commercial licensing opportunities?
A robust patent estate enhances licensing attractiveness, whereas overlapping claims or prior art may limit licensing scope or lead to disputes.

5. What role does prior art play in the validity of patent claims for similar chemical compounds?
Prior art can invalidate claims if it predates the patent’s filing date, demonstrating that the claimed compound or method was already known, thus impacting the patent’s enforceability.


References

  1. U.S. Patent and Trademark Office. Patent Full-Text and Image Database (PatFT).
  2. Patent file history of U.S. Patent 11,903,943 (if publicly available).
  3. Prior art and related patent filings in the therapeutic area for [specific class or condition].
  4. Legal analyses of patent claim construction methodology.
  5. Industry reports on patent landscapes in pharmaceutical innovation.

More… ↓

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Drugs Protected by US Patent 11,903,943

Applicant Tradename Generic Name Dosage NDA Approval Date TE Type RLD RS Patent No. Patent Expiration Product Substance Delist Req. Patented / Exclusive Use Submissiondate
Oyster Point Pharma TYRVAYA varenicline tartrate SPRAY;NASAL 213978-001 Oct 15, 2021 RX Yes Yes ⤷  Get Started Free ⤷  Get Started Free TREATMENT OF THE SIGNS AND SYMPTOMS OF DRY EYE DISEASE (DED) ⤷  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 11,903,943

Country Patent Number Estimated Expiration Supplementary Protection Certificate SPC Country SPC Expiration
Australia 2015336216 ⤷  Get Started Free
Australia 2020213351 ⤷  Get Started Free
Brazil 112017008097 ⤷  Get Started Free
Brazil 122022025737 ⤷  Get Started Free
Canada 2965129 ⤷  Get Started Free
>Country >Patent Number >Estimated Expiration >Supplementary Protection Certificate >SPC Country >SPC Expiration

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