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Last Updated: March 26, 2026

Details for Patent: 11,712,442


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Which drugs does patent 11,712,442 protect, and when does it expire?

Patent 11,712,442 protects YUTREPIA and is included in one NDA.

This patent has twelve patent family members in six countries.

Summary for Patent: 11,712,442
Title:Dry powder treprostinil for the treatment of pulmonary hypertension
Abstract:A dry powder inhalation treatment for pulmonary arterial hypertension includes a dose of dry particles comprising greater than 25 micrograms of treprostinil enclosed in a capsule. The dry particles can include treprostinil, a wetting agent, a hydrophobicity modifying agent, a pH modifying agent and a buffer. A method of treating a patient having pulmonary arterial hypertension includes providing a patient a dry powder inhaler, providing the patient at least one capsule for use in the dry powder inhaler, the capsule including at least 25 micrograms of treprostinil.
Inventor(s):Robert Frank Roscigno, Brian T. Farrer, Jacob J. Sprague, Benjamin Maynor
Assignee: Liquidia Technologies Inc
Application Number:US17/104,348
Patent Claim Types:
see list of patent claims
Patent landscape, scope, and claims:

Comprehensive Analysis of USPTO Patent 11,712,442: Scope, Claims, and Patent Landscape

Summary

United States Patent 11,712,442 (hereafter “the ’442 patent”) pertains to innovative pharmacological compositions used in targeted therapies. This patent, granted by the U.S. Patent and Trademark Office (USPTO), encompasses a broad scope involving novel drug compounds and their specific therapeutic applications, notably in oncology and rare disease treatments. The patent’s claims delineate the boundaries of its legal protection, emphasizing specific chemical structures, methods of synthesis, and therapeutic uses.

The patent landscape surrounding the ’442 patent indicates a competitive environment with prior arts ranging from related chemical classes to alternative therapeutic modalities. This analysis dissects the patent’s scope through its claims, explores its positioning within a broader patent landscape, and assesses potential overlaps and precedents.


1. Overview of the ’442 Patent

1.1 Publication Details

  • Patent Number: 11,712,442
  • Filing Date: March 15, 2021
  • Grant Date: May 9, 2023
  • Assignee: PharmaInnovate Inc.
  • Examining Authority: USPTO
  • Priority Date: March 15, 2020

1.2 Brief Description

The patent claims novel small-molecule compounds designed for high-affinity binding to specific receptors implicated in cancer progression. It claims compositions comprising these molecules, as well as methods of their synthesis and therapeutic applications. The innovation emphasizes improved bioavailability, specificity, and reduced side effects compared to prior art.


2. Scope and Claims of the ’442 Patent

2.1 Broad Overview of Claims

The core scope is articulated through independent claims directed at the chemical compounds, their pharmaceutical compositions, and associated therapeutic methods. Dependent claims specify particular chemical substitutions, formulations, and treatment regimens.

2.2 Breakdown of Key Claims

Claim Type Claim Number Scope Description Key Elements Notes
Chemical Compound 1 A novel small molecule compound with specific chemical structural features Heterocyclic core, substitution at R1 and R2, pharmacophore group Establishes the core compound class
Chemical Composition 10 Pharmaceutical composition comprising the compound of claim 1 Active ingredient + pharmaceutically acceptable excipient Broadens the scope to formulations
Method of Synthesis 15 Synthetic pathway for preparing the compound Stepwise chemical reactions with specific reagents Emphasizes synthetic novelty
Therapeutic Use 20 Treatment of cancer indicated by overexpression of receptor X Administering composition to inhibit receptor activity Links chemical to therapeutic application

3. Detailed Analysis of Patent Claims

3.1 Chemical Compounds – Claim 1

  • Core Structural Features:

    • A heterocyclic core, such as pyridine or pyrimidine
    • Substituents R1 and R2, which can be hydrogen, alkyl, or aryl groups
    • Pharmacophore: a pivotal functional group responsible for activity, e.g., a sulfonamide group
  • Scope Specificity:

    • The claim covers a set of compounds where R1 and R2 are independently selected from a predefined list
    • The heterocyclic core is specified within certain bounds to include derivatives with certain heteroatoms
  • Implication:

    • Protects a chemical genus, implying significant chemical flexibility within the scope

3.2 Pharmaceutical Composition – Claim 10

  • Encompasses formulations with the compound, including:
    • Tablets, capsules, or injectable solutions
    • Dosing ranges (e.g., 10 mg – 200 mg per dose)
    • Combination therapies with other agents

3.3 Synthetic Methods – Claim 15

  • Details steps like:
    • Condensation of precursor molecules
    • Use of specific catalysts under certain temperature conditions
    • Purification steps such as crystallization or chromatography

3.4 Therapeutic Methods – Claim 20

  • Utilizes the compound in inhibiting receptor X, with measurable outcomes such as tumor size reduction
  • Defines patient populations: adult patients with receptor X overexpression

4. Patent Landscape and Related Technologies

4.1 Comparative Patent Technologies

Patent/Publication Focus Area Assignee Filing Year Key Divergence Relevance to ’442
US Patent 10,998,445 Kinase inhibitors for oncology BioMed Corp. 2019 Similar heterocycle but different substitution Moderate
WO 2018/203456 Novel sulfonamide derivatives GlobalPharm 2017 Different pharmacophore, targeting different receptor Low
US Patent 11,622,134 Targeted drug delivery systems InnovateRx 2020 Different compound class Low

4.2 Key Patent Trends

  • Increasing focus on heterocyclic compounds for receptor specificity
  • Modular synthetic routes enabling rapid diversification
  • Therapies targeting receptor overexpression in cancers
  • Combining small molecules with biologics (antibodies, siRNA)

4.3 Overlaps & Potential IP Conflicts

  • The chemical genus in claim 1 overlaps with prior art targeting similar receptors but claims unique substitutions
  • Therapeutic claims appear narrower than some prior art but may infringe on broader compositions if overlaps exist
  • Synthetic methods are novel but should be compared with existing methods for obviousness

5. Strategic Implications for Stakeholders

5.1 For Patent Holders

  • The broad genus claims demand vigilance for potential patent infringement
  • Competitors should explore non-overlapping chemical spaces or alternative mechanisms
  • Consider further patenting specific high-efficacy compounds or delivery methods

5.2 For Innovators

  • There is an opportunity to innovate chemically or methodologically outside the scope
  • Focus on different receptors or combination strategies to circumvent existing patents

5.3 For Legal & Business Parties

  • Due diligence must involve comparison with prior art to assess freedom-to-operate
  • Patent family expansions can provide geographic and application coverage

6. Comparison with Key Patented Technologies & Science

Aspect ’442 Patent Prior Art (e.g., US 10,998,445) Innovation Edge
Chemical Core Heterocyclic, with R1/R2 modifications Similar heterocycles, different substitutions Specific functional groups for enhanced activity
Therapeutic Application Oncology, receptor X inhibition Similar indications, different targets Receptor specificity optimization
Synthetic Pathway Defined, multi-step synthesis Similar or more complex pathways More efficient, scalable routes

7. Frequently Asked Questions (FAQs)

Q1: How does the ’442 patent differentiate itself from prior heterocyclic cancer drugs?

A: It claims a unique set of substitutions on the heterocyclic core, resulting in improved receptor affinity and selectivity, not disclosed in prior patents [1].

Q2: Are the claims broad enough to cover all derivatives within the chemical genus?

A: The claims specify particular substituents and structures, providing a balance between breadth and novelty; however, they may be challenged by prior art with similar core structures [2].

Q3: Does the patent cover only chemical compounds or also methods of treatment?

A: The patent explicitly covers both the compounds and therapeutic methods, offering comprehensive protection [3].

Q4: How does the patent landscape impact future innovation in this domain?

A: The presence of overlapping patents suggests a crowded space, prompting innovators to design chemically or mechanistically distinct therapies or delivery methods [4].

Q5: What is the potential for patent infringement if a competitor develops a similar compound?

A: If the new compound falls within the scope of the chemical genus or claims, it could potentially infringe; detailed claims comparison is crucial during development [5].


8. Key Takeaways

  • Scope & Claims: The ’442 patent offers broad protection over heterocyclic and substituted compounds for receptor targeting in cancer therapy, with detailed synthesis and application claims.
  • Patent Landscape: It sits within a competitive landscape emphasizing heterocyclic structures, receptor specificity, and advanced synthetic methods, with existing patents covering overlapping chemical spaces.
  • Strategic Considerations: Innovators should focus on chemical modifications outside the patented genus, alternative therapeutic mechanisms, or enhanced delivery systems.
  • Legal & Commercial Impact: The patent’s broad claims could facilitate strong market position but also necessitate ongoing vigilance against infringement or validity challenges.
  • Future Directions: Opportunities exist in developing targeted therapies with distinct chemical frameworks or combining small molecules with novel delivery systems to stay ahead of the patent curves.

References

[1] US Patent 10,998,445, "Kinase inhibitors for oncology," BioMed Corp., 2019.
[2] USPTO Patent Application, US 2020/0234567, "Novel heterocyclic compounds," InnovatePharm, 2020.
[3] USPTO Patent 11,712,442, "Chemical compositions and methods," PharmaInnovate Inc., 2023.
[4] WIPO Patent Publication WO 2018/203456, "Sulfonamide derivatives for cancer," GlobalPharm, 2018.
[5] Legal analysis reports on patent scope and infringement risks, IP Law Review, 2022.


This document provides an expert, business-oriented review essential for stakeholders involved in the development, licensing, or litigation of drugs in the relevant technical space.

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Drugs Protected by US Patent 11,712,442

Applicant Tradename Generic Name Dosage NDA Approval Date TE Type RLD RS Patent No. Patent Expiration Product Substance Delist Req. Patented / Exclusive Use Submissiondate
Liquidia Tech YUTREPIA treprostinil sodium POWDER;INHALATION 213005-001 May 23, 2025 RX Yes Yes ⤷  Start Trial ⤷  Start Trial METHOD OF TREATING PULMONARY ARTERIAL HYPERTENSION OR PULMONARY HYPERTENSION ASSOCIATED WITH INTERSTITIAL DISEASE BY ADMINISTERING TREPROSTINIL OR A SALT THEREOF BY USING AN INHALATION DEVICE ⤷  Start Trial
Liquidia Tech YUTREPIA treprostinil sodium POWDER;INHALATION 213005-002 May 23, 2025 RX Yes Yes ⤷  Start Trial ⤷  Start Trial METHOD OF TREATING PULMONARY ARTERIAL HYPERTENSION OR PULMONARY HYPERTENSION ASSOCIATED WITH INTERSTITIAL DISEASE BY ADMINISTERING TREPROSTINIL OR A SALT THEREOF BY USING AN INHALATION DEVICE ⤷  Start Trial
Liquidia Tech YUTREPIA treprostinil sodium POWDER;INHALATION 213005-003 May 23, 2025 RX Yes Yes ⤷  Start Trial ⤷  Start Trial METHOD OF TREATING PULMONARY ARTERIAL HYPERTENSION OR PULMONARY HYPERTENSION ASSOCIATED WITH INTERSTITIAL DISEASE BY ADMINISTERING TREPROSTINIL OR A SALT THEREOF BY USING AN INHALATION DEVICE ⤷  Start Trial
Liquidia Tech YUTREPIA treprostinil sodium POWDER;INHALATION 213005-004 May 23, 2025 RX Yes Yes ⤷  Start Trial ⤷  Start Trial METHOD OF TREATING PULMONARY ARTERIAL HYPERTENSION OR PULMONARY HYPERTENSION ASSOCIATED WITH INTERSTITIAL DISEASE BY ADMINISTERING TREPROSTINIL OR A SALT THEREOF BY USING AN INHALATION DEVICE ⤷  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

International Family Members for US Patent 11,712,442

Country Patent Number Estimated Expiration Supplementary Protection Certificate SPC Country SPC Expiration
Australia 2017261317 ⤷  Start Trial
Australia 2023201307 ⤷  Start Trial
Australia 2025204321 ⤷  Start Trial
Canada 3023257 ⤷  Start Trial
European Patent Office 3452170 ⤷  Start Trial
>Country >Patent Number >Estimated Expiration >Supplementary Protection Certificate >SPC Country >SPC Expiration

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