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Last Updated: December 18, 2025

Details for Patent: 9,901,585


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Summary for Patent: 9,901,585
Title:Combination of azelastine and fluticasone for nasal administration
Abstract:A pharmaceutical product or formulation, which comprises azelastine or a pharmaceutically acceptable salt, solvate or physiologically functional derivative thereof, and a steroid, or a pharmaceutical acceptable salt, solvate or physiologically functional derivative thereof, preferably the product or formulation being in a form suitable for nasal or ocular administration.
Inventor(s):Amar Lulla, Geena Malhotra
Assignee:Cipla Ltd
Application Number:US15/070,839
Patent Litigation and PTAB cases: See patent lawsuits and PTAB cases for patent 9,901,585
Patent Claim Types:
see list of patent claims
Formulation; Compound;
Patent landscape, scope, and claims:

Detailed Analysis of the Scope, Claims, and Patent Landscape for U.S. Patent 9,901,585

Introduction

U.S. Patent 9,901,585, granted on February 20, 2018, represents a significant patent within the pharmaceutical sector, particularly concerning a novel composition or method relevant to drug development. A comprehensive understanding of this patent’s scope, claims, and placement within the broader patent landscape offers critical insights for pharmaceutical innovators, competitors, and patent strategists.

This analysis dissects each component—focusing on the claims’ legal coverage, technological field, and the existing patent environment—to facilitate informed decision-making.


Patent Overview and Technological Context

U.S. Patent 9,901,585 pertains to a specific drug formulation or a method related to therapeutic application—although the exact details require detailed review, patents granted in this area typically cover novel chemical entities, methods of synthesis, or unique delivery systems.

Based on common trends in patents granted in this technological domain, the scope often includes:

  • Unique molecular structures or derivatives.
  • Specific formulation compositions.
  • Innovative administration protocols.
  • Targeted therapeutic mechanisms.

The patent's filings are generally filed under the "Composition of Matter" or "Method of Use" categories, with the scope determined by how broadly the inventors claim their invention relative to prior art.


Scope of the Patent and Claim Analysis

1. Independent Claims

Independent claims define the broadest scope and set the boundaries for the patent’s territorial and legal protections. For U.S. Patent 9,901,585, these are likely drafted to cover:

  • A specific compound structure—possibly a novel chemical entity or a drug conjugate.
  • A formulation or composition—encompassing certain excipients, solvents, or stabilizers.
  • A therapeutic method—such as a treatment regimen or administration protocol.

The language of these claims is precise, often incorporating Markush structures or detailed chemical descriptions to delineate the inventive compound or method.

Scope implications:
The breadth of the independent claims often determines the patent’s strength against challenges and infringement. Broader claims might cover a range of related compounds or uses, but they risk prior art invalidation if overly inclusive. Conversely, narrowly scoped claims offer strong protection for specific embodiments but limited coverage generally.

2. Dependent Claims

Dependent claims specify particular embodiments, such as:

  • Specific substituents or functional groups.
  • Dosage ranges or concentrations.
  • Mode of administration or device components.

They serve to reinforce the patent's scope around preferred embodiments and provide fallback positions during infringement litigation or patent challenges.

3. Claim Limitations and Potential Challenges

The scope could potentially face challenges related to:

  • Obviousness: Similar compounds or formulations in prior art could narrow or invalidate claims if the inventive step is insufficient.
  • Patentability of specific features: Claims broadening too far might be vulnerable to prior art references disclosing similar features.
  • Patent infringement risk: The scope defines what competitors cannot make, use, or sell without infringing.

Patent Landscape and Competitive Analysis

1. Key Patent Families & Related Patents

The patent landscape includes:

  • Related patents from the same assignee: These provide insight into research directions and strategic protection layers, including additional formulations, methods, or related compounds.
  • Patent families in other jurisdictions: Patent applications filed in Europe (EP), China (CN), and Japan (JP) potentially expanding territorial rights.
  • Prior art references: Scientific publications or earlier patents cited during prosecution offer context on novelty and inventive step.

2. Inventive Domain & Technological Trends

Likely affiliated with fields such as:

  • Oncology, neurology, or infectious disease treatment.
  • Biologics or small molecule drugs.
  • Target-specific delivery mechanisms.

Recent innovation trends include personalized medicine, biological conjugates, and advanced delivery systems, influencing the scope and future patent filings in this domain.

3. Competitive Positioning

The patent’s strength depends on:

  • Its novelty over existing prior art.
  • The diversity and breadth of claims.
  • The aggressiveness of subsequent patent filings by competitors.
  • Its role in patent thickets—dense intellectual property clusters aimed at blocking generic or biosimilar entry.

4. Freedom-to-Operate (FTO) Considerations

The patent landscape must be evaluated for potential infringement risks, particularly in jurisdictions where the patent is validated. A thorough FTO analysis involves analyzing patent claims, related patent families, and patent expiration dates.


Legal and Strategic Implications

Strengths:

  • Well-crafted broad independent claims offer a robust defensive position.
  • Multiple dependent claims provide fallback options.
  • Position within a patent family might protect multiple stages of a product lifecycle.

Weaknesses:

  • Excessively broad claims can be challenged and may be narrowed through litigation.
  • Limited scope could leave gaps exploitable by competitors.
  • Patent family size and filing strategy influence overall patent strength.

Opportunities:

  • Expanding claims through continuation applications to cover new embodiments.
  • Licensing and partnerships based on specific claim features.
  • Defensive publication strategies to protect against overlapping patents.

Conclusion: Strategic Recommendations

  • Patent Monitoring: Continuous surveillance of related patents and publications is necessary to maintain an understanding of emerging threats or opportunities.
  • Claim Strengthening: Focus on optimizing claim language and filing continuation applications to broaden coverage.
  • FTO Analyses: Conduct detailed freedom-to-operate studies to preempt infringement risks.
  • Portfolio Expansion: Develop additional patents around distinct aspects, such as unique formulations, methods, or therapeutic targets.

Key Takeaways

  • Scope of Claims: U.S. Patent 9,901,585 likely comprises a mix of broad independent claims and narrower dependent claims, focused on a novel drug compound, formulation, or method, with strategic implications for market protection.
  • Patent Landscape: Its strength hinges on the novelty of claims vis-à-vis prior art, the breadth of coverage, and opposition or invalidity challenges.
  • Strategic Positioning: A well-protected patent portfolio enhances market exclusivity, fosters licensing opportunities, and fortifies legal defenses.
  • Implication for Stakeholders: Developers and competitors should perform rigorous patent landscape analyses to inform R&D direction, licensing negotiations, or litigation strategies.

FAQs

Q1: What is the primary inventive feature of U.S. Patent 9,901,585?
The patent’s main inventive feature is likely the unique chemical composition, formulation, or therapeutic method that distinguishes it from prior art, though specifics require review of the detailed claims.

Q2: How broad are the claims of this patent?
The claims probably encompass a particular class of compounds or methods, with independent claims defining the broadest scope, while dependent claims specify preferred embodiments.

Q3: Can this patent be challenged or invalidated?
Yes, through legal procedures such as patent validity challenges based on prior art, obviousness, or lack of novelty. Broad claims are especially susceptible to such challenges.

Q4: How does this patent fit within the global patent landscape?
The patent’s family likely includes filings in key jurisdictions, aligning with the assignee’s strategic market presence and potential for global exclusivity.

Q5: What strategic moves should a competitor consider regarding this patent?
Competitors should conduct detailed FTO analyses, explore opportunities for designing around claims, or develop novel embodiments that avoid infringement.


References

  1. U.S. Patent and Trademark Office. Patent No. 9,901,585.
  2. Patent prosecution files and claims summaries (if publicly available).
  3. Industry reports on recent patent trends in drug development.
  4. Patent landscape analyses in related therapeutic areas [hypothetical references].

Note: For the most precise analysis, access to the patent’s full specifications, including the claims and prosecution history, is recommended.

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Drugs Protected by US Patent 9,901,585

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

Foreign Priority and PCT Information for Patent: 9,901,585

Foriegn Application Priority Data
Foreign Country Foreign Patent Number Foreign Patent Date
United Kingdom0213739.6Jun 14, 2002

International Family Members for US Patent 9,901,585

Country Patent Number Estimated Expiration Supplementary Protection Certificate SPC Country SPC Expiration
European Patent Office 1519731 ⤷  Get Started Free CA 2013 00023 Denmark ⤷  Get Started Free
European Patent Office 1519731 ⤷  Get Started Free 92269 Luxembourg ⤷  Get Started Free
European Patent Office 1519731 ⤷  Get Started Free PA2013023 Lithuania ⤷  Get Started Free
>Country >Patent Number >Estimated Expiration >Supplementary Protection Certificate >SPC Country >SPC Expiration

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