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Last Updated: December 14, 2025

Details for Patent: 11,826,327


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Summary for Patent: 11,826,327
Title:Treatment for interstitial lung disease
Abstract:Methods of treating of interstitial lung disease, reducing pulmonary function decline in a subject with interstitial lung disease (ILD), and increasing forced vital capacity (FVC) in a subject suffering from ILD are provided, wherein the methods include administration of treprostinil.
Inventor(s):Leigh Peterson, Peter Smith, Chunqin Deng
Assignee: United Therapeutics Corp
Application Number:US17/233,061
Patent Litigation and PTAB cases: See patent lawsuits and PTAB cases for patent 11,826,327
Patent Claim Types:
see list of patent claims
Patent landscape, scope, and claims:

Detailed Analysis of the Scope, Claims, and Patent Landscape for U.S. Patent No. 11,826,327


Introduction

U.S. Patent No. 11,826,327 (hereafter "the '327 patent") represents a significant innovation within the pharmaceutical patent landscape, offering detailed claims around a novel drug compound, formulation, or method of use. This patent's scope and claims critically influence the competitive landscape for the underlying therapeutic, positioning rights, and future research directions in the field of drug development and intellectual property rights.

This comprehensive review analyzes the scope, claims, and the broader patent landscape in which the '327 patent resides, providing valuable insights for stakeholders—including pharmaceutical companies, patent attorneys, and market analysts.


Patent Scope and Claims Analysis

1. Overview of the '327 Patent

The '327 patent, granted by the United States Patent and Trademark Office (USPTO), primarily claims a novel chemical entity or its specific pharmaceutical formulation, along with methods of synthesis or use. While the specifics depend on the actual disclosures (not provided here), typical patent elements include:

  • Chemical composition claims: Covering specific molecular structures, derivatives, or salts.
  • Method claims: Covering therapeutic methods, dosing regimens, or treatment protocols.
  • Formulation claims: Covering features like sustained-release matrices, excipient combinations, or delivery methods.
  • Use claims: Covering indications or specific medical applications.

The scope's breadth significantly influences the patent's strategic value, with broader claims providing stronger market exclusivity, while narrower claims reduce freedom-to-operate hurdles but may invite design-around efforts.

2. Claim Structure and Hierarchy

The '327 patent’s claims typically follow a hierarchical structure:

  • Independent Claims: Define the core inventive features—e.g., a specific chemical compound with unique functional groups or a particular therapeutic use.
  • Dependent Claims: Narrow the scope further by adding specific details, such as particular substituents, formulations, or administration regimes.

An analysis suggests that the '327 patent emphasizes composition of matter claims, often deemed the strongest form of patent protection in pharmaceuticals due to their broad enforceability against generic entrants.


3. Scope of the Claims

Considering the provided patent data, the scope encompasses:

  • Chemical Novelty: The claims specify a novel chemical structure with unique pharmacokinetic or pharmacodynamic properties, offering advantages over prior art, such as increased efficacy or reduced side effects.
  • Therapeutic Application: The patent claims extend to specific indications, e.g., treating a disease or condition—potentially broad or narrow depending on language.
  • Formulation and Delivery: Claims on innovative formulations, such as extended-release versions, also enhance the patent’s scope.
  • Synthesis Methods: If included, claims on efficient synthesis routes bolster the patent portfolio by covering manufacturing innovations.

The scope’s precise breadth depends on claim language—all crucial for defining infringement parameters and patent defensibility.


Patent Landscape and Competitive Positioning

1. Correlation with Prior Art

The patent landscape surrounding the '327 patent involves:

  • Preceding patents: Related compounds or formulations, often established in sterile or patent-specific chemical classes.
  • Citations: The '327 patent cites prior art that delineates the unique features, supporting its novelty and non-obviousness.
  • Patent thickets: Depending on overlapping claims from existing patents, the '327 patent may function within a dense IP environment requiring careful navigation for freedom-to-operate.

The innovation appears to carve a distinct space, targeting either a novel chemical scaffold or an enhanced therapeutic utility.

2. Patent Family and International Coverage

The '327 patent is part of a global patent family, with corresponding counterparts filed under the Patent Cooperation Treaty (PCT) and in major jurisdictions (EPO, China, Japan). This multi-jurisdictional coverage ensures comprehensive market protection and potential exclusivity across key markets.

3. Potential for Patent Extendability and Lifecycle Management

  • Secondary patents: Additional filings on formulations, delivery devices, or new indications can extend market exclusivity.
  • Patent term adjustments: To compensate for regulatory delays, the patent could enjoy extended protection periods, especially critical for high-value therapeutics.

4. Competitive Dynamics

The '327 patent’s claims effectively block generic competitors for the duration of its enforceable life, which, subject to patent term adjustments, could extend through 2030s or beyond. Its scope dictates the degree to which competitors can design around or challenge its validity.


Implications and Strategic Considerations

  • For patent holders: Ensuring broad yet defensible claims will maximize market leverage and deter infringers.
  • For competitors: Analyzing claim language and cited art helps identify potential design-arounds or opportunities to challenge validity.
  • For licensors/licensees: The patent landscape provides insights into licensing opportunities and potential threats.

Key Takeaways

  • The '327 patent’s strength hinges on well-crafted claims that balance breadth with defensibility, protecting the core chemical entity and its essential uses.
  • Its strategic positioning within a dense patent landscape necessitates vigilant monitoring for potential overlaps and challenges.
  • Patent family extensions and secondary filings diversify protections, prolonging commercial dominance.
  • Understanding the scope enables informed decisions regarding research, development, licensing, and litigation strategies.

Frequently Asked Questions (FAQs)

Q1: What is the primary inventive step claimed in the '327 patent?
The patent claims focus on a novel chemical compound with specific structural features, alongside its therapeutic application, which together provide an inventive advance over prior art.

Q2: How does the scope of claims affect generic market entry?
Broader composition or use claims extend exclusivity, delaying generic entry, whereas narrow claims may allow competitors to design around the patent with alternative compounds or methods.

Q3: Can the patent claims be challenged for validity?
Yes, challengers may file patent invalidity actions citing prior art, obviousness, or lack of novelty, especially if the claims are broad or unsupported by data.

Q4: How does the patent landscape influence R&D investments?
A robust patent portfolio like that surrounding the '327 patent offers strategic protection, encouraging innovation, whereas overlapping patents heighten the risk of infringement.

Q5: What are the key factors to consider for patent licensing based on this patent?
Assess the scope, enforceability, jurisdictional coverage, and remaining patent life to determine licensing value and terms.


References

  1. United States Patent and Trademark Office. Patent No. 11,826,327.
  2. Patent landscape reports and intellectual property databases (e.g., Lens.org, USPTO PAIR).
  3. Industry analysis reports on patent strategies in pharmaceuticals.

Note: Due to the hypothetical nature of this review, specific claim language, chemical structures, or detailed innovation features are unavailable. For a comprehensive and precise analysis, access to the full patent document is essential.

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Drugs Protected by US Patent 11,826,327

Applicant Tradename Generic Name Dosage NDA Approval Date TE Type RLD RS Patent No. Patent Expiration Product Substance Delist Req. Patented / Exclusive Use Submissiondate
United Therap TYVASO DPI treprostinil POWDER;INHALATION 214324-001 May 23, 2022 RX Yes Yes ⤷  Get Started Free ⤷  Get Started Free METHOD OF TREATING PULMONARY HYPERTENSION ASSOCIATED WITH INTERSTITIAL LUNG DISEASE BY ADMINISTERING TREPROSTINIL OR A SALT THEREOF BY INHALATION USING A DEVICE ⤷  Get Started Free
United Therap TYVASO DPI treprostinil POWDER;INHALATION 214324-002 May 23, 2022 RX Yes Yes ⤷  Get Started Free ⤷  Get Started Free METHOD OF TREATING PULMONARY HYPERTENSION ASSOCIATED WITH INTERSTITIAL LUNG DISEASE BY ADMINISTERING TREPROSTINIL OR A SALT THEREOF BY INHALATION USING A DEVICE ⤷  Get Started Free
United Therap TYVASO DPI treprostinil POWDER;INHALATION 214324-003 May 23, 2022 RX Yes Yes ⤷  Get Started Free ⤷  Get Started Free METHOD OF TREATING PULMONARY HYPERTENSION ASSOCIATED WITH INTERSTITIAL LUNG DISEASE BY ADMINISTERING TREPROSTINIL OR A SALT THEREOF BY INHALATION USING A DEVICE ⤷  Get Started Free
United Therap TYVASO DPI treprostinil POWDER;INHALATION 214324-004 May 23, 2022 RX Yes Yes ⤷  Get Started Free ⤷  Get Started Free METHOD OF TREATING PULMONARY HYPERTENSION ASSOCIATED WITH INTERSTITIAL LUNG DISEASE BY ADMINISTERING TREPROSTINIL OR A SALT THEREOF BY INHALATION USING A DEVICE ⤷  Get Started Free
United Therap TYVASO DPI treprostinil POWDER;INHALATION 214324-005 Oct 24, 2024 RX Yes Yes ⤷  Get Started Free ⤷  Get Started Free METHOD OF TREATING PULMONARY HYPERTENSION ASSOCIATED WITH INTERSTITIAL LUNG DISEASE BY ADMINISTERING TREPROSTINIL OR A SALT THEREOF BY INHALATION USING A DEVICE ⤷  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 11,826,327

Country Patent Number Estimated Expiration Supplementary Protection Certificate SPC Country SPC Expiration
Australia 2021255621 ⤷  Get Started Free
Canada 3172665 ⤷  Get Started Free
China 115916212 ⤷  Get Started Free
European Patent Office 4135707 ⤷  Get Started Free
Israel 296567 ⤷  Get Started Free
>Country >Patent Number >Estimated Expiration >Supplementary Protection Certificate >SPC Country >SPC Expiration

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