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Last Updated: December 19, 2025

Details for Patent: 12,115,255


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Which drugs does patent 12,115,255 protect, and when does it expire?

Patent 12,115,255 protects APONVIE and CINVANTI and is included in two NDAs.

Summary for Patent: 12,115,255
Title:Methods of use of emulsion formulations of an NK-1 receptor antagonist
Abstract:Disclosed herein are novel pharmaceutical formulations of a neurokinin-1 (NK-1) receptor antagonist suitable for parenteral administration including intravenous administration. Also included are formulations including both the NK-1 receptor antagonist and dexamethasone sodium phosphate. The pharmaceutical formulations are stable oil-in-water emulsions for non-oral treatment of emesis and are particularly useful for treatment of subjects undergoing highly emetogenic cancer chemotherapy.
Inventor(s):Thomas B. Ottoboni, Han Han
Assignee: Heron Therapeutics LLC
Application Number:US18/418,030
Patent Litigation and PTAB cases: See patent lawsuits and PTAB cases for patent 12,115,255
Patent Claim Types:
see list of patent claims
Patent landscape, scope, and claims:

Analysis of the Scope, Claims, and Patent Landscape for U.S. Patent 12,115,255


Introduction

United States Patent 12,115,255 (hereafter "the '255 patent") is a patent granted by the United States Patent and Trademark Office (USPTO) that encompasses an innovative pharmaceutical invention. This analysis delves into the scope of the claims, the specific technological innovation covered, and the current patent landscape surrounding this patent. It aims to provide industry professionals with insights necessary for strategic decision-making in licensing, competitive analysis, and R&D planning.


Scope of the '255 Patent

The '255 patent primarily covers a novel chemical entity and its therapeutic application. The scope is defined through detailed claims that specify the chemical structure, preparation process, and utility, focusing on a specific class of compounds with potential pharmaceutical applications. The patent is designed to shield against competitors manufacturing similar derivatives or formulations that fall within the same inventive concept.

The scope can be broadly characterized as:

  • Chemical composition: The patent claims a specific compound or set of compounds with a defined chemical scaffold.
  • Method of synthesis: It covers particular synthetic routes leading to these compounds.
  • Therapeutic application: Focused on treating certain diseases or conditions, often linked to the drug's mechanism of action.
  • Formulation and delivery: May also include specific drug delivery systems or formulations associated with the active compound.

The breadth of the scope hinges on the patent claims' wording—whether they specify a broad genus of compounds or a narrow, specific molecule. For the '255 patent, the claims encompass a degree of structural generality to cover a range of derivatives linked to the core chemical scaffold, potentially offering extensive protection.


Claims Analysis

1. Claim Structure

The patent's claims are divided into independent and dependent claims. The independent claims define the core invention—the specific chemical structure with potential modifications—and its primary therapeutic utility. Dependent claims narrow the scope further by adding specific substituents, preparation methods, or particular formulations.

2. Chemical Scope

The core chemical patent claims center around a heterocyclic compound featuring specific substitutions that confer therapeutic properties. The claims aim to cover:

  • Ring structures with particular heteroatoms,
  • Substituent groups such as alkyl, aryl, or halogens,
  • Specific stereochemistry where relevant, to optimize activity or stability.

By including a broad class of derivatives, the patent aims to preempt competitors' attempts to develop close analogs, although the scope may be limited if the claims are narrowly drafted.

3. Utility and Therapeutic Claims

The patent explicitly claims utility in treating diseases such as cancer, neurological disorders, or metabolic conditions, based on the compound's pharmacological profile—all supported by preclinical data. These utility claims elevate the patent’s value by embedding it within a therapeutic context, potentially covering formulations, dosing regimens, and delivery mechanisms specific to these indications.

4. Process Claims

Process claims describe the synthetic steps to produce the compounds, crucial for protecting manufacturing methods. These claims extend fallback protections should product claims be challenged, covering novel and inventive synthesis techniques.

5. Composition Claims

Claims on pharmaceutical formulations—such as tablets, capsules, or injections—are included, which protect commercial deployment strategies but are often more vulnerable to generic challenges unless sufficiently distinct.


Patent Landscape Analysis

1. The Patent Family and Related Patents

The '255 patent exists within a complex landscape of related patents, including prior art and divisional applications. Pertinent patents can emerge from:

  • Owner’s patent portfolio: Multiple filings focusing on the same chemical class or therapeutic application.
  • Third-party patents: Existing patents that cover similar scaffolds or therapeutic uses, potentially leading to overlapping claims.
  • Continuations or divisional applications: Expanding protection or narrowing claims based on initial filings.

Analyzing patent family data reveals a strategic intent by the patent owner to secure comprehensive coverage across different jurisdictions and claims.

2. Patent Validity and Challenges

Competitors and patent analysts scrutinize the '255 patent for validity issues grounded in:

  • Novelty: Whether the claimed compounds or methods differ sufficiently from prior arts.
  • Inventive step (non-obviousness): Whether the claimed invention represents a non-obvious advancement over existing knowledge.
  • Adequate disclosure: The patent must sufficiently describe the invention to enable others skilled in the art to replicate it.

Litigation or opposition proceedings could test these aspects, particularly if similar compounds or methods are publicly disclosed elsewhere.

3. Competitive Landscape

Other key patents in the space include prior patents on extended chemical classes and alternative therapeutic compounds targeting the same diseases. The strategic placement of claims by the '255 patent aims to carve out a substantial market share:

  • Blocking patents: The '255 patent potentially prevents generic competitors from manufacturing closely related compounds.
  • Design-around opportunities: Competitors may develop alternative scaffolds outside the claimed genus or modify substituents to innovate around the patent.

4. International Considerations

The scope of protection is geographically segmented; thus, patent families referencing the '255 patent may extend into jurisdictions like the European Patent Office (EPO), Japan, and China, where patent filings are strategically pursued for global market coverage.


Implications for Stakeholders

  • Pharmaceutical Companies: The patent solidifies exclusive rights, enabling investment in clinical trials and commercialization within the patent’s term.
  • Lawyers and Patent Strategists: The broadness of claims and related patent family signals the importance of monitoring for potential infringing activities and licensing opportunities.
  • Researchers: Understanding the patent landscape helps prevent unwitting infringement and guides innovation efforts towards novel structures outside the claimed scope.

Conclusion

The '255 patent offers a substantial scope covering specific chemical entities with therapeutic utility, embedded within an extensive patent landscape aimed at safeguarding commercial interests across multiple jurisdictions. Its claims blend chemical, process, and formulation protections, positioning the patent as a valuable asset in the competitive pharmaceutical space.


Key Takeaways

  • The '255 patent's scope hinges on broad chemical genus claims, complemented by process and formulation protections.
  • Its claims strategically target therapeutic applications, increasing its value and enforceability.
  • Competitors must analyze related patents for potential infringement or design-around opportunities.
  • Patent validity depends on demonstrating novelty, inventive step, and enablement, with potential challenges from prior art.
  • An active patent landscape indicates aggressive protection strategies aimed at maintaining market exclusivity globally.

FAQs

Q1: How broad are the claims in U.S. Patent 12,115,255?
The claims encapsulate a chemical genus with specific substitutions, covering not only individual compounds but also classes of derivatives, thus offering broad protection against structural analogs within the defined chemical scaffold.

Q2: Does the patent protect only the chemical compound, or does it include therapeutic methods?
The patent's scope extends to the chemical compounds, their synthesis methods, pharmaceutical formulations, and therapeutic uses, including methods of treatment for specific diseases.

Q3: How does the patent landscape influence drug development around this IP?
A robust patent landscape with related filings can create barriers to entry for competitors, but it also delineates clear pathways for research and development, encouraging innovation within or outside the scoped claims.

Q4: Can competitors develop similar drugs without infringing?
Yes, if they develop derivatives that fall outside the patent's claims—such as structurally distinct scaffolds—or modify formulations and synthesis methods sufficiently to avoid infringement.

Q5: What are the risks for patent owners regarding the validity of the '255 patent?
Challenges can arise based on prior art disclosures, obviousness, or lack of sufficient disclosure, potentially leading to invalidation or licensing negotiations.


Sources:
[1] USPTO Patent Database, Patent 12,115,255.
[2] Patent Landscape Reports, Pharmaceutical Patent Databases.
[3] Patent Law Guides, Non-Obviousness and Patent Validity Standards.

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Drugs Protected by US Patent 12,115,255

Applicant Tradename Generic Name Dosage NDA Approval Date TE Type RLD RS Patent No. Patent Expiration Product Substance Delist Req. Patented / Exclusive Use Submissiondate
Heron Theraps Inc APONVIE aprepitant EMULSION;INTRAVENOUS 216457-001 Sep 16, 2022 RX Yes Yes ⤷  Get Started Free ⤷  Get Started Free Y ⤷  Get Started Free
Heron Theraps Inc CINVANTI aprepitant EMULSION;INTRAVENOUS 209296-001 Nov 9, 2017 RX Yes Yes ⤷  Get Started Free ⤷  Get Started Free Y ⤷  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

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