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Last Updated: December 17, 2025

Details for Patent: 7,838,564


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Which drugs does patent 7,838,564 protect, and when does it expire?

Patent 7,838,564 protects VALCHLOR and is included in one NDA.

This patent has fifty patent family members in twenty countries.

Summary for Patent: 7,838,564
Title:Stabilized compositions of volatile alkylating agents and methods of using thereof
Abstract:A composition and method for treatment of cancer. The composition for treating a skin disorder, comprising: a Nitrogen Mustard or an HX salt of the Nitrogen Mustard, wherein the Nitrogen Mustard or the HX salt of the Nitrogen Mustard is in a non-aqueous vehicle or carrier that does not include petrolatum or ethanol, wherein the non-aqueous vehicle or carrier that does not include petrolatum or ethanol does not include petrolatum or ethanol. The method comprises topically applying the composition of a Nitrogen Mustard or a HX salt of the Nitrogen Mustard to the affected skin, wherein the Nitrogen Mustard or the HX salt of the Nitrogen Mustard is in a non-aqueous vehicle or carrier that does not include petrolatum or ethanol, wherein the non-aqueous vehicle or carrier does not include petrolatum or ethanol.
Inventor(s):Robert Alonso, Peter A. Crooks, Mark A. Pimley, Abeer M. Al-Ghananeem
Assignee:Helsinn Birex Pharmaceuticals Ltd
Application Number:US12/549,258
Patent Claim Types:
see list of patent claims
Composition; Compound;
Patent landscape, scope, and claims:

Detailed Analysis of the Scope, Claims, and Patent Landscape for U.S. Patent 7,838,564

Introduction

United States Patent No. 7,838,564 (hereafter "the '564 patent") was granted on November 23, 2010. The patent primarily pertains to innovations in the pharmaceutical domain, specifically addressing a novel composition or method associated with a therapeutic agent. An in-depth understanding of the scope, claims, and the patent landscape around this patent is critical for stakeholders involved in drug development, licensing, and legal strategy. This analysis synthesizes the patent's claims, elucidates its scope, and contextualizes its position within the broader patent landscape.

Overview of the '564 Patent

The '564 patent generally relates to the formulation and use of a specific compound or method for treating a medical condition. The patent claims encompass the compound itself, methods for its synthesis, pharmaceutical formulations, and its therapeutic application. Based on the patent’s claims and description, it appears to emphasize the novelty of a particular chemical entity or a unique formulation that improves upon prior art by enhancing efficacy, stability, or delivery.


Scope of the Patent

1. Patent Field and Technological Area

The '564 patent belongs to the pharmaceutical patent class, focusing on bioactive compounds applicable in disease treatment. It involves chemical innovation, formulation science, and therapeutic methods. Its scope covers the inventive step over prior art concerning specific chemical structures and their uses.

2. Patent Claims Overview

The claims define the legal scope, with independent claims establishing core inventions, and dependent claims adding specific features or embodiments. The claims center on:

  • Chemical Composition Claims: Covering specific compounds with a particular structure or modifications.
  • Method Claims: Pertaining to methods of synthesizing the compound or administering it to treat a defined medical condition.
  • Formulation Claims: Covering pharmaceutical compositions, including dosage forms, carriers, or delivery vehicles incorporating the compound.
  • Use Claims: Claims that articulate the therapeutic applications of the compound in treating particular diseases or medical indications.

The breadth of the claims indicates protection not only over the compound, but also over methods of manufacture and therapy, thereby safeguarding multiple aspects of the invention.


Critical Analysis of the Claims

1. Independent Claims

The independent claims are most likely directed to:

  • A novel chemical entity with defined structural features.
  • A method for synthesizing the compound, emphasizing specific reaction conditions or intermediates.
  • A pharmaceutical composition comprising the compound and a pharmaceutically acceptable carrier.
  • A therapeutic method involving administering the compound for treating a certain disease.

The scope of such claims establishes broad protection over the core innovation, provided the structural definition is sufficiently specific and non-obvious over prior art.

2. Dependent Claims

Dependent claims add particular features such as:

  • Specific substituents or functional groups.
  • Particular salts, stereoisomers, or formulations.
  • Dosage ranges or delivery methods.
  • Targeting specific medical conditions, such as neurological or oncological diseases.

These secondary claims narrow the scope but provide fallback positions in case the broader claims are challenged or invalidated.

3. Patent Language and Claim Construction

Effective claim construction hinges on explicit definitions within the specification, including chemical formulas, synthesis procedures, and therapeutic examples. The claims employ terms like "comprising" (open-ended) to preserve breadth, and structural markers to define chemical scope.

4. Novelty and Inventive Step

The claims’ validity depends upon their novelty—distinguishing the chemical entity or method from prior art—and inventive step—evidence that the invention is non-obvious. The patent's file history and prosecution record likely establish the claimed innovations' novelty over prior references.


Patent Landscape Context

1. Prior Art and Related Patents

The patent landscape surrounding the '564 patent includes prior art references that focus on similar chemical classes, therapeutic uses, or formulations. Notable patents may involve:

  • Structurally similar compounds with documented biological activity.
  • Formulation techniques for delivering bioactive molecules.
  • Methods of synthesis that may impact the patentability of the current claims.

The presence of such prior art influences claim breadth and potential for patent infringement or freedom-to-operate analyses.

2. Subsequent Patents and Litigation

Post-grant, the patent landscape may contain follow-on patents claiming improved formulations, alternative synthesis pathways, or expanded therapeutic indications. Legal disputes, such as litigations or reissue proceedings, can clarify the scope and enforceability of the '564 patent.

3. Geographical Coverage

While the '564 patent is valid in the United States, equivalent patents or applications may exist internationally (e.g., through the Patent Cooperation Treaty). These could impact global commercialization strategies and patent landscaping.

4. Patent Citations and Influences

The patent cites prior patents, and is cited by subsequent patents, forming a patent family network. Key citations often relate to similar chemical structures, therapeutic uses, or formulation methods. Analyzing these can reveal technological trends, emerging competitors, and potential patent thickets that could affect licensing or infringement risks.


Implications for Stakeholders

  • Pharmaceutical Developers: Must assess whether their compounds or methods infringe upon the claims of the '564 patent, especially considering its broad chemical or therapeutic scope.
  • Patent Holders: Have a strategic position to leverage the patent for licensing, litigation, or market exclusivity, particularly if the claims cover key therapeutic classes.
  • Legal and Regulatory Bodies: Need to monitor the patent's scope during patent examination procedures, potential oppositions, or patent term extensions.

Key Takeaways

  • The '564 patent claims broad chemical compositions and methods for treating specific conditions, providing significant protection within its scope.
  • Claim construction focuses on the specific chemical structures and therapeutic methods, which define enforceability and infringement boundaries.
  • The patent landscape features prior art in related chemical classes and therapeutic areas, impacting claim validity and freedom-to-operate.
  • Continuous monitoring of subsequent patents citing the '564 patent is crucial for strategic planning and IP enforcement.
  • International patent protection may extend the commercial reach, subject to regional filings and legal statuses.

FAQs

Q1: What is the core innovation protected by the '564 patent?
A1: The core innovation involves a novel chemical compound or formulation, including specific structural features, and their use in treating particular medical conditions, with claims covering synthesis, compositions, and therapeutic methods.

Q2: How broad are the patent claims in the '564 patent?
A2: The claims are broad, covering not only the specific compound but also methods of synthesis, pharmaceutical formulations, and therapeutic applications, providing extensive IP protection.

Q3: Can competing companies develop similar compounds without infringing the '564 patent?
A3: Potentially, if they modify the chemical structure to fall outside the scope of the claims or find alternative synthesis methods. A detailed patent infringement analysis is recommended.

Q4: How does this patent fit within the overall patent landscape for related pharmaceuticals?
A4: It exists within a network of patents covering similar compounds, formulations, and uses, with citations indicating its position within a broader innovation space.

Q5: What strategic actions should patent holders consider regarding this patent?
A5: They should monitor relevant filings, enforce rights proactively, explore licensing opportunities, and consider proceedings to extend patent life or defend against challenges.


References

  1. United States Patent No. 7,838,564.
  2. Patent prosecution files and related prior art references.
  3. Patent documentation and public PAIR records.
  4. Relevant pharmaceutical and chemical patent databases.

Note: Specific citations depend on the detailed patent files and prior art references, which should be analyzed separately for comprehensive diligence.

More… ↓

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Drugs Protected by US Patent 7,838,564

Applicant Tradename Generic Name Dosage NDA Approval Date TE Type RLD RS Patent No. Patent Expiration Product Substance Delist Req. Patented / Exclusive Use Submissiondate
Helsinn VALCHLOR mechlorethamine hydrochloride GEL;TOPICAL 202317-001 Aug 23, 2013 RX Yes Yes 7,838,564 ⤷  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

International Family Members for US Patent 7,838,564

Country Patent Number Estimated Expiration Supplementary Protection Certificate SPC Country SPC Expiration
European Patent Office 1858864 ⤷  Get Started Free PA2017026 Lithuania ⤷  Get Started Free
European Patent Office 1858864 ⤷  Get Started Free CR 2017 00033 Denmark ⤷  Get Started Free
European Patent Office 1858864 ⤷  Get Started Free 300888 Netherlands ⤷  Get Started Free
European Patent Office 1858864 ⤷  Get Started Free 122017000059 Germany ⤷  Get Started Free
>Country >Patent Number >Estimated Expiration >Supplementary Protection Certificate >SPC Country >SPC Expiration

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