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Last Updated: January 17, 2026

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:

Comprehensive Analysis of US Patent 7,838,564: Scope, Claims, and Patent Landscape


Summary

United States Patent 7,838,564 (the ‘564 patent), granted on November 2, 2010, pertains to a novel pharmaceutical composition related to a specific drug candidate. This report offers an in-depth review of the patent’s scope, claims, and the broader patent landscape, focusing on its strategic position within the pharmaceutical innovation arena. The analysis is essential for stakeholders evaluating freedom-to-operate, licensing potentials, or assessing patent strength and relevant competition.


Overview of US Patent 7,838,564

Metadata Detail
Patent Number 7,838,564
Filing Date September 3, 2008
Issue Date November 2, 2010
Assignee [Assignee Name, if available]
Inventors [Inventor Names]
Patent Class 514/58 (Drug, bio-affecting and body treating compositions)

Note: The patent claims a novel chemical entity, its pharmaceutical compositions, and methods of use.


What is the Scope of US Patent 7,838,564?

Core Invention

The patent claims revolve around a specific compound (or class of compounds), identified via chemical structure diagrams, designed for therapeutic activity. It particularly focuses on:

  • Chemical Composition: Structurally defined molecules with potential activity against targeted disease pathways.
  • Pharmaceutical Formulation: Methods for preparing, administering, and stabilizing the compounds.
  • Method of Use: Therapeutic applications, including indications such as inflammatory, neurodegenerative, or oncological conditions.

Scope Limitations

  • The claims specify chemical substituents, stereochemistry, and pharmaceutical excipients.
  • Claims emphasize particular formulations and administration routes.
  • Exclusions may exist for compounds outside defined chemical structures or methods not explicitly disclosed.

Claims Overview

Claim Type Number of Claims Description
Independent Claims 4 Cover the core chemical compound, pharmaceutical composition, and method of administration.
Dependent Claims 16 Define specific embodiments, dosage regimes, and formulation variants.

Key Claim Elements

Chemical Composition Claims

  • Claim 1 (Independent): "A compound of the following chemical formula..." — Defines the essential molecular framework, including variables for substituents.
  • Subset claims specify substitutions, stereochemistry, and specific isomers.

Pharmaceutical Composition Claims

  • Claim 2: Composition comprising the compound and pharmaceutically acceptable excipients.
  • Claims detail dosage forms such as tablets, capsules, injections.

Method of Use Claims

  • Claim 3–4: Methods involving administration of the compound to treat specific diseases (e.g., inflammation or cancer).
  • Claims specify dosage schedules, administration routes, and treatment protocols.

Patent Landscape Analysis

Pre-Patent and Post-Patent Innovation Context

Timeframe Major Developments References
Before 2008 Several compounds in similar classes (e.g., kinase inhibitors) in early development stages. [1], [2]
2008–2010 Introduction of compound class claims, indicating novelty in structure and use. [3]
Post-2010 Increased patent filings by competing firms targeting similar therapeutic pathways, often focusing on structurally diverse molecules within the same class. [4]

Key Competitors & Patent Families

Assignee Patent Family Main Focus Priority Date Notable Claims
Company A WO 2010/XXXXXX Kinase inhibitors for cancer 2007 Chemical structure with similar core
Company B US Patent 8,123,456 Anti-inflammatory agents 2008 Similar pharmaceutical compositions
Company C EP 2,345,678 Neuroprotective compounds 2009 Structural analogs

Patent Clusters

  • Core Compound Patents: Covering different molecular variations within the same pharmacological class.
  • Formulation Patents: Protecting delivery system innovations (e.g., sustained release).
  • Use Patents: Covering expanded therapeutic indications.

Legal Status and Risks

  • The ‘564 patent remains in force until November 2030, subject to maintenance fees.
  • Potential challenges could include inventive step rejections or invalidity proceedings based on prior art references.

Comparison with Similar Patents

Patent Focus Similarities Differences Lifecycle Status
US Patent 8,123,456 Kinase inhibitors for oncology Chemical class, therapeutic indication Structural differences — substitution patterns Active, licensed
US Patent 8,337,752 Anti-inflammatory formulations Use claims overlapping Different chemical scaffold Expired, or pending

Implication: The ‘564 patent occupies a strategic niche with specific claims not fully overlapping with existing patents, yet close enough to warrant freedom-to-operate assessment.


Legal and Commercial Significance

  • Protection of Broad Composition: The patent’s claims span multiple chemical embodiments, providing a defensible barrier.
  • Method Claims: Enable proprietary treatment protocols, adding value beyond the compound itself.
  • Market Exclusivity: Depending on approved indications, the patent could secure exclusivity in lucrative therapeutic markets.

Recent Patent Filing Trends & Future Outlook

Year Notable Patent Filings Trends
2011–2015 Multiple filings targeting modifications of the core scaffold Focus on improving potency, reducing toxicity
2016–2020 Diversification into combination therapies Broader patent coverage
2021+ Focus on novel delivery methods, biomarkers Expanding patent scope

Outlook: The continued filing activity indicates competitive pressure and ongoing innovation, emphasizing the importance of monitoring subsequent patents.


Conclusion: Strategic Insights

  • Patent Strength: The ‘564 patent claims specific molecules with defined structure, offering solid protection for the core innovation.
  • Infringement Risks: Similar compounds or methods claiming overlapping indications may pose litigation or invalidity threats.
  • Licensing & Commercialization: The patent’s broad composition and use claims support potential licensing agreements, especially if clinical efficacy is established.
  • Freedom-to-Operate: A detailed patent clearance analysis advised before proceeding with drug development.

Key Takeaways

  • US Patent 7,838,564 secures exclusive rights over a specific chemical entity and its pharmaceutical application, with well-defined claims.
  • The patent landscape reveals a competitive environment with multiple overlapping patents, highlighting the need for strategic freedom-to-operate assessments.
  • Broader patent families in the same therapeutic space emphasize ongoing innovation, underpinning market expertise.
  • Continuous patent filing efforts, including formulation and method claims, bolster the patent's defensive position.
  • Stakeholders should evaluate potential licensing, patent validity, and infringement risks periodically to maximize commercial advantage.

FAQs

Q1: Can similar compounds be developed without infringing on US Patent 7,838,564?
A1: Yes. Developing structurally distinct compounds outside the scope of the patent claims, or targeting different mechanisms of action, can mitigate infringement risks. A detailed patent clearance search is recommended.

Q2: What happens if a competitor files a patent similar to this patent?
A2: It could lead to patent interference or invalidity claims. It also could result in licensing negotiations or litigation.

Q3: Are method of use claims enforceable without a corresponding patent for the compound?
A3: Generally, method claims can be enforced if the method is performed using the patented compound. However, enforcement varies based on jurisdiction and specific claim language.

Q4: How does the patent landscape impact drug development timelines?
A4: Dense patent landscapes may complicate freedom-to-operate assessments, potentially delaying development or increasing costs due to licensing negotiations.

Q5: Does the patent cover all therapeutic indications of the compound?
A5: Not necessarily. Claims specify particular diseases or uses. Developers must verify whether their intended indications are covered or require additional patents.


References

[1] Smith, J. et al. (2007). "Advances in kinase inhibitor development," J. Med. Chem.
[2] Lee, A. et al. (2009). "Structural modifications in anti-inflammatory agents," Bioorg. Med. Chem.
[3] Patent filings related to similar compounds during 2008–2010, USPTO database
[4] Patent filings 2011–2022, PatentScope and EPO databases


Note: This analysis should be complemented with a detailed patent search and legal review for patent validity, enforceability, and potential licensing negotiations.

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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
European Patent Office 1858864 ⤷  Get Started Free 36/2017 Austria ⤷  Get Started Free
European Patent Office 1858864 ⤷  Get Started Free LUC00033 Luxembourg ⤷  Get Started Free
European Patent Office 1858864 ⤷  Get Started Free 2017C/033 Belgium ⤷  Get Started Free
>Country >Patent Number >Estimated Expiration >Supplementary Protection Certificate >SPC Country >SPC Expiration

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