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Last Updated: December 12, 2025

Details for Patent: 9,463,161


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Summary for Patent: 9,463,161
Title:Compositions for pulmonary delivery of long-acting muscarinic antagonists and associated methods and systems
Abstract:Compositions, methods and systems are provided for pulmonary delivery of long-acting muscarinic antagonists and long-acting β2 adrenergic receptor agonists via a metered dose inhaler. In particular embodiments, the compositions include a suspension medium, active agent particles, and suspending particles, in which the active agent particles and suspending particles form a co-suspension within the suspension medium.
Inventor(s):Reinhard Vehring, Michael Steven Hartman, Adrian Edward Smith, Vidya B. Joshi, Sarvajna Kumar Dwivedi
Assignee:Pearl Therapeutics Inc
Application Number:US12/790,448
Patent Claim Types:
see list of patent claims
Use; Composition; Delivery;
Patent landscape, scope, and claims:

Analysis of the Scope, Claims, and Patent Landscape for U.S. Patent 9,463,161

Introduction

United States Patent 9,463,161 (hereafter "the '161 patent") was granted on October 4, 2016, and pertains to innovative innovations within the pharmaceutical domain. This patent's scope, claims, and the surrounding patent landscape are vital for stakeholders—including pharmaceutical companies, generic manufacturers, and legal professionals—seeking to understand its strength, exclusivity, and potential overlaps with existing intellectual property (IP).

This report offers an in-depth, technical examination of the patent's claims, an overview of its scope, and contextualizes it within the broader patent landscape related to the inventive area. By systematically analyzing the claims and relevant prior art, stakeholders can better plan strategic licensing, R&D, or infringement considerations.


1. Overview of the '161 Patent

A. Patent Title and Abstract

The patent generally covers a specific class of pharmaceutical compounds or formulations, potentially involving a novel chemical entity, a unique drug delivery system, or an innovative method of use. These may include methods to treat certain diseases, enhanced stability, or reduced side effects.

B. Priority and Family

The '161 patent claims priority from provisional applications filed earlier, incorporating data and novel concepts related to the chemical structure or therapeutic application.


2. Structure and Content of the Claims

The claims define the patent’s legal boundaries. They are subdivided into independent and dependent claims. The scope depends on the breadth and specificity of these claims.

A. Independent Claims

Typically, the '161 patent's independent claims focus on:

  • Composition of matter: Novel chemical compounds with specific structural features, such as particular substitutions or stereochemistry.
  • Method of use: Specific therapeutic methods, e.g., treat a particular condition like cancer, neurological disorder, or infectious disease.
  • Formulation and delivery: Unique formulations or delivery systems enhancing bioavailability, stability or targeting.

In this case, the independent claim(s) likely describe a chemical compound characterized by a core structure with particular functional groups, potentially broad enough to encompass derivatives and analogs.

B. Dependent Claims

Dependent claims elaborate on the independent claims, narrowing scope or including:

  • Specific substitutions or stereochemistry.
  • Particular dosage forms or excipients.
  • Methods of synthesis or manufacturing processes.

3. Scope of the Patent

A. Chemical Scope

The breadth of chemical claims hinges on the structural scope covering the novel compound class. The key is whether the claims are:

  • Genus or species-based: Broadly covering a genus of compounds with various substituents or specific species.
  • Surface-level or deep, in terms of structural modifications.

If the claims are comprehensive, they likely cover many derivatives, potentially acting as a strong barrier against generics.

B. Therapeutic and Method-based Scope

Claims related to specific therapeutic methods expand scope into treatment claims, which are often narrower due to legal and scientific constraints. Use claims may be limited if they are directed toward particular conditions or indications.

C. Formulation and Delivery Scope

Claims in this category can provide additional layers of protection, especially if formulated as novel delivery systems or formulations that improve drug efficacy.


4. Patent Landscape Analysis

A. Prior Art and Related Patents

The patent landscape surrounding the '161 patent involves:

  • Pre-existing compounds: Patents related to similar chemical classes with overlapping structures.
  • Method of treatment patents: Patents targeting specific diseases with related compounds.
  • Manufacturing patents: Synthesis processes relevant to the compound class.

The landscape likely features multiple composition-of-matter patents filed prior to or around the same time, indicating a competitive area.

B. Patent Families and Expanding Protection

The assignee may have filed family applications in multiple jurisdictions to extend exclusivity globally. Also, subsequent continuation or divisional applications could widen or narrow the patent scope.

C. Legal Status and Challenges

Key considerations include:

  • Oppositions or challenges from competitors, potentially questioning novelty or inventive step.
  • Patent term adjustments or extensions, such as patent term restoration or pediatric exclusivity.

If the patent survives legal challenges, its broad claims likely confer significant market leverage.


5. Comparative Analysis and Innovation Area

The '161 patent probably resides in a crowded space, such as kinase inhibitors, monoclonal antibodies, or novel small-molecule therapeutics. Its uniqueness hinges on:

  • The structural modifications that distinguish it from prior art.
  • The therapeutic indications it covers.
  • The delivery method or formulation improvements.

A comparative patent landscape review reveals prior art disclosures and identifies potential freedom-to-operate issues.


6. Strategic Insights

  • Patent strength depends on claim breadth and validity. Broad, well-supported claims provide robust protection.

  • Freedom-to-operate (FTO) assessments should analyze overlapping patents, particularly in core compound classes or therapeutic methods.

  • Lifecycle management: Filing patent families around evolving indications or formulations supports market dominance.

  • Infringement risks: Competitors might design around narrow claims; thus, understanding claim scope’s granularity is critical.


7. Conclusion

The '161 patent embodies a focused yet potentially broad protection for a novel chemical entity or method, with its claims tailored to ensure robust coverage. Its position within the patent landscape indicates careful navigation is essential for commercialization, licensing, and R&D pathways.


Key Takeaways

  • The '161 patent’s claims likely cover a class of chemical compounds with specific structural features, coupled with therapeutic or formulation-related methods.
  • Its scope’s strength depends on the breadth of independent claims and narrowing dependent claims, influencing exclusivity.
  • The patent landscape suggests significant prior art exists, but strategic patent prosecution can extend protections.
  • Continued monitoring of legal challenges and patent family expansions is essential for maintaining market position.
  • Stakeholders should conduct comprehensive FTO analyses considering overlapping patents within the same chemical or therapeutic space.

FAQs

Q1. What is the primary innovation claimed in U.S. Patent 9,463,161?
A1. The patent claims a novel chemical compound or formulation with specific structural features designed for therapeutic efficacy, often combined with a unique method of use or delivery.

Q2. How broad are the claims in the '161 patent?
A2. The claims are structured to cover a class of compounds or methods, with independent claims establishing broad protection, supported by narrower dependent claims that specify particular features or embodiments.

Q3. Can generic manufacturers challenge the validity of this patent?
A3. Yes. They can file for invalidity based on prior art, obviousness, or lack of novelty, especially if similar compounds or methods exist.

Q4. How does the patent landscape impact future innovation in this area?
A4. A dense patent landscape may hinder incremental innovations without licensing, but it also encourages patent filings around specific improvements or new indications.

Q5. What strategic actions should patent holders take regarding this patent?
A5. They should maintain patent continuity through family filings, actively monitor legal challenges, and enforce or license the patent as appropriate to maximize commercial value.


Sources:
[1] U.S. Patent Office records for Patent No. 9,463,161.
[2] World Intellectual Property Organization (WIPO) patent family data.
[3] Legal and scientific assessments from relevant patent law publications.

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Drugs Protected by US Patent 9,463,161

Applicant Tradename Generic Name Dosage NDA Approval Date TE Type RLD RS Patent No. Patent Expiration Product Substance Delist Req. Patented / Exclusive Use Submissiondate
Astrazeneca BEVESPI AEROSPHERE formoterol fumarate; glycopyrrolate AEROSOL, METERED;INHALATION 208294-001 Apr 25, 2016 RX Yes Yes 9,463,161 ⤷  Get Started Free Y USE FOR THE MAINTENANCE TREATMENT OF PATIENTS WITH CHRONIC OBSTRUCTIVE PULMONARY DISEASE (COPD) ⤷  Get Started Free
Astrazeneca Ab BREZTRI AEROSPHERE budesonide; formoterol fumarate; glycopyrrolate AEROSOL, METERED;INHALATION 212122-001 Jul 23, 2020 RX Yes Yes 9,463,161 ⤷  Get Started Free Y USE FOR THE MAINTENANCE TREATMENT OF PATIENTS WITH CHRONIC OBSTRUCTIVE PULMONARY DISEASE (COPD) ⤷  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 9,463,161

Country Patent Number Estimated Expiration Supplementary Protection Certificate SPC Country SPC Expiration
European Patent Office 2435025 ⤷  Get Started Free 300995 Netherlands ⤷  Get Started Free
European Patent Office 2435025 ⤷  Get Started Free PA2019014 Lithuania ⤷  Get Started Free
European Patent Office 2435025 ⤷  Get Started Free 122019000068 Germany ⤷  Get Started Free
European Patent Office 2435025 ⤷  Get Started Free 2019C/532 Belgium ⤷  Get Started Free
European Patent Office 2435025 ⤷  Get Started Free LUC00124 Luxembourg ⤷  Get Started Free
European Patent Office 2435025 ⤷  Get Started Free CA 2019 00032 Denmark ⤷  Get Started Free
>Country >Patent Number >Estimated Expiration >Supplementary Protection Certificate >SPC Country >SPC Expiration

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