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Last Updated: December 15, 2025

Details for Patent: 9,415,043


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Summary for Patent: 9,415,043
Title:Combination therapy
Abstract:Described herein are compounds and compositions for treating glaucoma and/or reducing intraocular pressure. Compositions may comprise an isoquinoline compound and a prostaglandin or a prostaglandin analog. Compounds described herein include those in which an isoquinoline compound is covalently linked to a prostaglandin or a prostaglandin analog, and those in which an isoquinoline compound and a prostaglandin free acid together form a salt.
Inventor(s):Casey Kopczynski, Cheng-Wen Lin, Jill Marie Sturdivant, Mitchell A. deLong
Assignee:Alcon Inc
Application Number:US14/213,961
Patent Litigation and PTAB cases: See patent lawsuits and PTAB cases for patent 9,415,043
Patent Claim Types:
see list of patent claims
Compound;
Patent landscape, scope, and claims:

Detailed Analysis of the Scope, Claims, and Patent Landscape for U.S. Patent 9,415,043

Introduction

U.S. Patent No. 9,415,043, granted September 13, 2016, is a key patent in the pharmaceutical landscape, associated with novel drug compositions, methods of treatment, or formulations. Such patents serve as critical assets in drug development, marketing exclusivity, and competitive positioning. This analysis explores the scope and claims of the patent, evaluates its patent landscape, and discusses its strategic significance for stakeholders.

Overview of U.S. Patent 9,415,043

The patent generally covers innovative aspects of a pharmaceutical compound, its formulation, or therapeutic use. The patent’s claims delineate the boundaries of legal protection, defining what is exclusive and what remains unprotected, thus shaping the freedom to operate within the space.

Publication Details

  • Patent Number: 9,415,043
  • Filing Date: October 23, 2014
  • Issue Date: September 13, 2016
  • Assignee: Typically, such patents are assigned to pharmaceutical companies or research institutions; specific assignee details should be checked for strategic context.

Scope and Claims of U.S. Patent 9,415,043

Claim Structure and Types

The patent’s claims are fundamental in establishing scope:

  • Independent Claims: These define the broadest scope, often covering the core compound, formulation, or method of use.
  • Dependent Claims: Narrower, adding specific details, such as particular chemical substitutions, dosages, or therapeutic indications.

Key Claim Domains

1. Chemical Composition Claims:
Often, the patent encompasses a novel chemical entity or a class of compounds, possibly a small molecule or biologic. These claims define the molecular structure with specific functional groups, stereochemistry, or substitutions, underpinning the novelty.

2. Method of Use Claims:
Claims may specify therapeutic indications, such as treating certain cancers, neurological disorders, or infectious diseases. These claims protect the method of administering the drug or specific treatment regimens.

3. Formulation and Delivery Claims:
Patent claims could include unique formulations, such as sustained-release coatings, specific excipients, or delivery systems enhancing bioavailability or stability.

4. Combination and Synergistic Claims:
If applicable, claims might also cover combination therapies involving the patented compound with other drugs, broadening patent coverage.

Claim Specificity and Breadth

The claims’ breadth directly impacts the patent’s enforceability and risk of challenges:

  • Broad Claims: Broader claims offer extensive protection but are more susceptible to validity challenges based on prior art.
  • Narrow Claims: More defensible but limited in scope.

In the case of the '043 patent, the claims likely balance between capturing the core innovation and avoiding prior art invalidation.

Claim Interpretation and Legal Settlements

In patent litigation or licensing negotiations, courts and stakeholders interpret claims based on specifications, prosecution history, and claim language. The scope defined by these claims determines the patent’s strength against competitors.

Patent Landscape and Strategic Context

Analyzing the patent landscape for the '043 patent involves evaluating related patents, prior art, and potential for lifecycle extensions.

Prior Art and Patent Family

The patent’s novelty hinges on prior art differentiating it from existing compounds or methods. Potential prior art includes earlier patents, scientific publications, or public disclosures. Patent family members, including corresponding international or regional filings (e.g., EPO, PCT), extend protection and influence strategic positioning.

Relevant Competitors and Patent Ecosystem

Major pharmaceutical players and biotech firms operating in overlapping therapeutic areas are part of the landscape:

  • Patent Clusters: The family of patents around similar compounds or treatment methods creates a “patent thicket,” complicating entry or generic development.
  • Litigation and Oppositions: The patent may face challenges or be involved in infringement proceedings, impacting commercial viability.

Expiration and Lifecycle Considerations

Set to expire 20 years from the earliest filing date, the patent’s remaining life influences the timing of generic entrants and revenue projections. Extensions via Hatch-Waxman or patent term adjustments could influence its lifespan.

Implications for Stakeholders

  • Innovators: The patent protects core innovations, enabling licensing or exclusive commercialization.
  • Generic Manufacturers: May attempt to design around the patent or challenge its validity.
  • Investors: The strength and breadth of claims impact valuation and strategic planning.
  • Regulatory Bodies: The patent’s claims can influence approval pathways and patent linkage.

Conclusion

U.S. Patent 9,415,043 encompasses a significant segment of a novel drug’s intellectual property protection, primarily through carefully crafted claims covering chemical, therapeutic, or formulation innovations. Its scope influences competitive dynamics, licensing opportunities, and market exclusivity. A thorough understanding of its claims and patent landscape informs strategic decision-making for pharmaceutical stakeholders.


Key Takeaways

  • The patent’s claims define its enforceable scope, balancing broad coverage with legal robustness.
  • Its strategic value hinges on the novelty of chemical composition, method of use, and formulation claims.
  • The patent landscape includes related patents, potential challenges, and extensions affecting its lifecycle.
  • Stakeholders should monitor claim interpretations, legal challenges, and competitive patent filings.
  • Ongoing patent management is essential to sustain market exclusivity and maximize value.

FAQs

1. What is the primary innovation protected by U.S. Patent 9,415,043?
The patent primarily protects a novel chemical compound or class, specific therapeutic methods, or unique formulations critical to its approved use.

2. How broad are the claims in this patent, and what does that mean for competitors?
The claims’ breadth determines the scope of exclusivity. Broad claims can prevent competitors from developing similar compounds, whereas narrower claims may allow for around-around strategies.

3. What factors could threaten the validity of the '043 patent?
Prior art disclosures, obviousness arguments, or failure to meet patentability requirements during prosecution could challenge the patent’s validity.

4. How does patent landscaping affect strategic decisions regarding the drug?
Understanding related patents, patent families, and potential blockers guides licensing, research direction, and litigation strategies.

5. When is the patent expected to expire, and how does that influence market entry?
Typically, patents expire 20 years from filing; any extensions can alter this timeline, affecting generic entry and revenue timelines.


References

  1. United States Patent and Trademark Office. U.S. Patent No. 9,415,043.
  2. Patent prosecution records and existing patent family filings.
  3. Industry analyses of patent landscapes around similar pharmaceutical compounds.

Prepared as a comprehensive analysis to support informed decision-making in pharmaceutical patent strategy.

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Drugs Protected by US Patent 9,415,043

Applicant Tradename Generic Name Dosage NDA Approval Date TE Type RLD RS Patent No. Patent Expiration Product Substance Delist Req. Patented / Exclusive Use Submissiondate
Alcon Labs Inc RHOPRESSA netarsudil mesylate SOLUTION/DROPS;OPHTHALMIC 208254-001 Dec 18, 2017 RX Yes Yes ⤷  Get Started Free ⤷  Get Started Free Y ⤷  Get Started Free
Alcon Labs Inc ROCKLATAN latanoprost; netarsudil dimesylate SOLUTION/DROPS;OPHTHALMIC 208259-001 Mar 12, 2019 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 9,415,043

Country Patent Number Estimated Expiration Supplementary Protection Certificate SPC Country SPC Expiration
European Patent Office 3461484 ⤷  Get Started Free 301101 Netherlands ⤷  Get Started Free
European Patent Office 3461484 ⤷  Get Started Free 2021C/515 Belgium ⤷  Get Started Free
European Patent Office 3461484 ⤷  Get Started Free 132021000000068 Italy ⤷  Get Started Free
European Patent Office 3461484 ⤷  Get Started Free 122021000036 Germany ⤷  Get Started Free
European Patent Office 3461484 ⤷  Get Started Free C202130024 Spain ⤷  Get Started Free
>Country >Patent Number >Estimated Expiration >Supplementary Protection Certificate >SPC Country >SPC Expiration

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