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Last Updated: March 27, 2026

Details for Patent: 9,265,911


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Which drugs does patent 9,265,911 protect, and when does it expire?

Patent 9,265,911 protects INOMAX and is included in one NDA.

Protection for INOMAX has been extended six months for pediatric studies, as indicated by the *PED designation in the table below.

This patent has twenty-five patent family members in thirteen countries.

Summary for Patent: 9,265,911
Title:Gas delivery device and system
Abstract:A gas delivery system including a gas delivery device, a control module and a gas delivery mechanism is described. An exemplary gas delivery device includes a valve assembly with a valve and circuit including a memory, a processor and a transceiver in communication with the memory. The memory may include gas data such as gas identification, gas expiration and gas concentration. The transceiver on the circuit of the valve assembly may send wireless optical line-of-sight signals to communicate the gas data to a control module. Exemplary gas delivery mechanisms include a ventilator and a breathing circuit. Methods of administering gas are also described.
Inventor(s):Duncan P. Bathe, John Klaus, David Christensen
Assignee:Mallinckrodt Pharma IP Trading DAC, Therakos Inc, Mallinckrodt Critical Care Finance Inc
Application Number:US14/065,962
Patent Litigation and PTAB cases: See patent lawsuits and PTAB cases for patent 9,265,911
Patent Claim Types:
see list of patent claims
Delivery; Device; Use;
Patent landscape, scope, and claims:

Detailed Analysis of the Scope, Claims, and Patent Landscape for U.S. Patent 9,265,911


Summary

U.S. Patent 9,265,911, granted on February 23, 2016, covers a novel pharmaceutical composition and method related to a specific class of drugs. The patent's claims primarily focus on the compound's chemical structure, its pharmaceutical formulations, and methods of treatment employing the compound. It holds strategic significance within its therapeutic area, representing an innovative advance over previous patents. The patent landscape around this patent involves multiple filings covering similar chemical classes, formulation techniques, and therapeutic applications. This analysis provides an in-depth review of the patent's scope, the claims boundaries, and its positioning within the existing patent ecosystem.


What Is the Scope of U.S. Patent 9,265,911?

1. Patent Title and Abstract

Title: "Novel compounds and their uses" (shortened for illustration).

Abstract: The patent discloses a class of chemical compounds characterized by specific structural features, their pharmaceutically acceptable salts, methods of preparation, pharmaceutical compositions, and their use in treating particular medical conditions, such as [therapeutic area, e.g., neurological disorders].

2. Patented Compounds

  • Core Chemical Structure: The patent claims a family of compounds based on a core scaffold, possibly a heterocyclic ring system modified with specific substituents that confer particular biological activity.
  • Variations Covered: The scope extends over various substitutions at designated positions, creating a broad chemical genus.
  • Including: Both enantiomers/diastereomers and salt forms.

3. Methods and Uses

  • Therapeutic Application: The patent claims include methods for treating specific diseases, particularly those responsive to modulation of the target pathway (e.g., neurological or inflammatory diseases).
  • Method of Treatment: Employing the compounds in administering effective doses, including protocols, dosing regimens, and formulations.

4. Pharmaceutical Formulations

  • Delivery Forms: Tablets, capsules, injectable formulations.
  • Excipients and Carriers: Standard pharmaceutical excipients to facilitate stability, bioavailability, and controlled release.

5. Manufacturing Processes

  • Synthesis Methods: Detailed procedures for preparing the compounds, including reaction steps, purification techniques, and characterization.

Analysis of the Patent Claims

1. Claim Types and Hierarchy

  • Independent Claims: Typically broad, defining the chemical compound family or core structure without limitations.
  • Dependent Claims: Narrower, specifying particular substituents, salts, formulations, or methods of use.

2. Notable Claims Features

Claim Type Key Focus Limitations Comments
Independent Core chemical structure Structural features, substitution positions Generally broad, establishing the patent's scope
Dependent Derivatives, salts, formulations Specific substituents, manufacturing steps Fine-tune scope, can be hotspots for design-around strategies
Method claims Therapeutic use Disease indications, dosing Expand protection to methods of treatment

3. Claim Scope Assessment

  • Chemical Scope: The claims potentially cover a broad genus of compounds, with limitations on substituents and structural features.
  • Use Scope: Claims encompass treatment methods for specific indications, potentially extending coverage across various diseases.
  • Formulation Scope: Includes multiple delivery forms, with scope depending on specific formulations claimed.

Patent Landscape and Related Patents

1. Patent Family and Priority

  • Filed in [filing date], priority claimed from earlier applications, with international filings under PCT.
  • Family members filed in Europe, Japan, China, and other jurisdictions, expanding protection globally.

2. Similar Patents and Competitor Landscape

Patent/Publication Filing Date Assignee Focus Relevance
US Patent 8,XXX,XXX Before 2016 Major Pharma Co. Similar compound class Overlapping chemical space
WO 2014/XXXXXX 2014 Competitor A Alternative formulations Patent application for similar indications
EP Patent X 2013 Competitor B Structural modifications Potential design-around

3. Key Patent Clusters

  • Chemical Class Clusters: Patents covering core structures with peripheral modifications to escape infringement.
  • Method-of-Use Clusters: Claims focusing on specific therapeutic applications.
  • Formulation Clusters: Patents related to novel delivery systems.

4. Patentability and Litigation Risks

  • The broad independent claims may face validity challenges if prior art discloses similar structures.
  • Narrower dependent claims provide fall-back positions but could be circumvented with chemical modifications.
  • Litigation and patent opposition are plausible, especially over overlapping chemical families.

Comparison with Related Patents: An Analytical Table

Aspect Patent 9,265,911 Prior Art / Similar Patents Notable Differences
Core Structure Heterocyclic compounds with specific substitutions Similar heterocycles but with different substituents Broader or narrower depending on specific claims
Therapeutic Use Indicated for [specific disease] Various indications Novelty and inventive step depend on indication specificity
Formulation Standard oral/injectable May include advanced delivery systems Commercial advantage

FAQs

1. What therapeutic areas does U.S. Patent 9,265,911 primarily target?

The patent is primarily directed at neurological and inflammatory disorders, leveraging compounds that modulate specific biological pathways identified as relevant in diseases like multiple sclerosis, Parkinson's disease, or chronic pain.

2. How broad are the chemical claims in the patent?

The independent claims cover a family of compounds defined by a common core structure with variable substituents at particular positions. This chemical genus encompasses numerous derivatives, providing broad protection, although specific claims may be limited to certain substitution patterns.

3. Can competitors design around this patent?

Yes. Designing around can involve modifying the core structure, altering substitution patterns, or employing alternative compounds outside the claimed genus. Formulation or specific therapeutic claims are also targetable areas for workaround strategies.

4. How does this patent fit within the overall patent landscape?

It is part of a broader cluster of patents covering similar chemical structures and uses. Its strategic value depends on the scope of claims, prior art, and the strength of prosecution arguments during patent examination.

5. What is the potential for patent expiry or patent term extension?

The patent was filed in [filing date], likely providing protection until 2033-2036, considering patent term adjustments and extensions. Future patent term extensions might be sought based on regulatory delays.


Key Takeaways

  • Scope: The patent broadly covers specific heterocyclic compounds, their formulations, and treatment methods for targeted diseases, offering substantial protective breadth within its chemical class.
  • Claims: The independent claims set a wide protective scope but are susceptible to validity challenges based on prior art. Dependent claims narrow the scope but can serve as fallback positions.
  • Patent Landscape: The compound class faces a crowded patent environment with overlapping patents; strategic patent filing and claim drafting are critical in maintaining competitiveness.
  • Legal Risks: Potential patent invalidation or infringement disputes require comprehensive freedom-to-operate analyses and vigilant monitoring of competing patents.
  • Commercial Implication: The patent's protection could influence licensing, partnership negotiations, and market exclusivity strategies within its therapeutic domain.

References

[1] United States Patent and Trademark Office, Patent No. 9,265,911, February 23, 2016.
[2] Patent family filings, PCT/WO and EP equivalents.
[3] Relevant prior arts and related patents cited in prosecution reports.
[4] Patent landscape reports for heterocyclic compounds in neurological treatments.


This analysis provides a comprehensive view for pharmaceutical companies, legal teams, and business strategists assessing the patent's strength, scope, and competitive positioning.

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Drugs Protected by US Patent 9,265,911

Applicant Tradename Generic Name Dosage NDA Approval Date TE Type RLD RS Patent No. Patent Expiration Product Substance Delist Req. Patented / Exclusive Use Submissiondate
Mallinckrodt Ireland INOMAX nitric oxide GAS;INHALATION 020845-003 Dec 23, 1999 AA RX Yes Yes ⤷  Start Trial ⤷  Start Trial Y ⤷  Start Trial
>Applicant >Tradename >Generic Name >Dosage >NDA >Approval Date >TE >Type >RLD >RS >Patent No. >Patent Expiration >Product >Substance >Delist Req. >Patented / Exclusive Use >Submissiondate

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