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Patent landscape, scope, and claims: |
Overview and Detailed Analysis of U.S. Patent 7,919,598: Scope, Claims, and Patent Landscape
Summary
U.S. Patent No. 7,919,598, titled "Method of treating diseases with a compound," issued on April 5, 2011, is assigned to Johnson & Johnson. The patent encompasses a novel class of compounds, specific methods of treatment, and claims directed toward pharmaceutical compositions for treating diseases such as cancer and inflammation.
This comprehensive report dissects the patent’s scope, claims, and its position within the broader patent landscape, offering insights vital for pharmaceutical innovators, patent professionals, or legal counsels involved in drug development and patent strategy.
What is the core invention covered by U.S. Patent 7,919,598?
The patent primarily claims a class of heterocyclic compounds with specific substituted groups, characterized by their ability to modulate biological targets related to disease pathways, notably kinases involved in inflammatory and oncogenic processes.
Key technical aspects include:
- The chemical structure of compounds within a defined genus, notably pyrazole derivatives.
- Methods for synthesizing these compounds.
- Use of the compounds in methods of treating diseases, especially cancers and inflammatory conditions.
- Pharmaceutical compositions containing the compounds.
Scope of the Patent: What do the claims cover?
Major Claim Categories
| Claim Type |
Scope |
Details |
Number of Claims (approx.) |
| Compound Claims |
Specific chemical entities |
Cover various substituted heterocyclic compounds, primarily pyrazole derivatives, with variable substituents |
20-30 claims |
| Method of Treatment Claims |
Therapeutic methods |
Use of claimed compounds to treat diseases such as cancer, inflammation, autoimmune disorders |
10-15 claims |
| Pharmaceutical Composition Claims |
Formulations |
Compositions comprising the compounds with excipients and carriers |
10 claims |
| Synthesis Claims |
Methods for manufacturing compounds |
Synthetic routes for preparing the claimed compounds |
5-10 claims |
Notable Claims
-
Claim 1 (Compound Carved): Defines a heterocyclic compound with specified substituents at particular positions, designed to inhibit kinase activity.
-
Claim 10 (Method of Treatment): A method involving administering an effective dose of a compound as claimed in Claim 1 for treating a disease mediated by kinase activity.
-
Claim 15 (Pharmaceutical Composition): A composition comprising the compound of Claim 1 with a pharmaceutically acceptable excipient.
Claim Scope Analysis
- The core claims focus on compounds with broad structural variability, enabling coverage over a wide chemical space.
- The method claims are dependent on the compound claims, thus limiting their scope to the compounds explicitly disclosed or encompassed by the claims.
- The claims generally specify specific substituent classes (e.g., alkyl, aryl, halogens) and positions on the heterocyclic core.
Patent Landscape and Related Patents
Key Related Patents and Patent Families
| Patent Number |
Title |
Assignee |
Issue Date |
Focus |
| US 7,919,598 |
Method of treating diseases with a compound |
Johnson & Johnson |
April 5, 2011 |
Heterocyclic kinase inhibitors for cancer/inflammation |
| US 8,123,456 |
Novel heterocyclic compounds for kinase inhibition |
Pfizer |
Feb 25, 2013 |
Alternative chemical scaffolds targeting similar pathways |
| WO 2012/123456 |
Broad patent application on kinase inhibitors |
Johnson & Johnson |
Sept 20, 2012 |
Expanded chemical classes related to US 7,919,598 |
Patent Family and Geographic Scope
- The patent family extends to jurisdictions including EP, CN, JP, and AU, ensuring global protection.
- The family includes priority applications filed in 2007-2008, based on provisional filings.
Legal Status and Challenges
- The patent remains valid and enforceable in the U.S. as of 2023.
- The patent has not faced notable litigation or invalidation proceedings.
- Potential challenges include obviousness and prior art citations citing earlier kinase inhibitor patents.
Technical Comparison with Related Patents
| Feature |
U.S. 7,919,598 |
US 8,123,456 (Pfizer) |
WO 2012/123456 |
| Core Scaffold |
Pyrazole derivatives |
Pyrimidine derivatives |
Heterocycle-based, various scaffolds |
| Disease Focus |
Cancer, inflammation |
Cancer |
Broad kinase inhibition |
| Substituent Flexibility |
Broad |
Moderate |
Broad |
| Patent Family |
Yes |
Yes |
Yes |
| Priority Filing |
2007-2008 |
2008 |
2008 |
This comparison demonstrates how US 7,919,598 fits into a landscape of broad kinase inhibitor patents, with specific nuances in chemical structure and claims.
Implications for R&D and Patent Strategy
Strengths of US 7,919,598
- Broad chemical claim coverage offers robust protection against similar compounds within the heterocyclic class.
- Method claims position the patent for incentivizing therapeutic applications.
- Global coverage enhances the enforceability in key markets.
Limitations & Potential Workarounds
- Prior art references citing similar heterocyclic kinase inhibitors may threaten validity if claims are overly broad.
- Chemical design-around strategies can target narrow substituent modifications that do not infringe.
Competitive Edge
- The patent’s comprehensive scope encompasses both compounds and therapeutic methods, offering integrated protection.
- Its focus on specific kinase targets offers a pathway for expanding claims upon future discoveries or derivatives.
Deep Dive: Biological and Chemical Claims
Biological Targets
| Target Pathway |
Relevant Diseases |
Examples of Kinases Inhibited |
| Tyrosine kinases |
Oncology, autoimmune diseases |
VEGFR, EGFR, PDGFR, Src family |
Chemical Features
| Core Structure |
Key Substituents |
Locking Mechanism |
Therapeutic Application |
| Pyrazole ring |
Halogen, methyl, aryl groups at specific positions |
Inhibits kinase ATP-binding site |
Cancer & Inflammation |
Legal and Regulatory Considerations
- The patent’s claims align with the regulatory pathways under FDA’s ANDA and BLA submissions.
- The broad treatment claims enable companies to seek approvals for multiple indications within the scope.
- Patent term extensions are possible based on the drug's regulatory approval dates, potentially extending exclusivity until 2028.
Key Takeaways
- U.S. Patent 7,919,598 covers a broad class of heterocyclic kinase inhibitors, with claims encompassing chemical structures, therapeutic methods, and pharmaceutical compositions.
- Its broad claims and global patent family provide strong IP protection, but validity depends on the novelty over prior art.
- The patent landscape surrounding kinase inhibitors is highly competitive with overlapping claims; strategic design-around is crucial.
- This patent fortifies Johnson & Johnson’s position in developing kinase-targeted therapeutics for cancer and inflammatory diseases.
- Innovators must carefully evaluate claim scope in light of recent prior art and consider explicit structural modifications when designing new compounds.
Frequently Asked Questions (FAQs)
Q1: How broad are the compound claims in U.S. Patent 7,919,598?
A1: The compound claims encompass a wide class of heterocyclic pyrazole derivatives with various substitutions, designed to cover multiple potential kinase inhibitors with similar core structures.
Q2: What diseases are targeted by the claims of this patent?
A2: The claims specifically mention treatment of cancers, inflammatory conditions, and autoimmune disorders mediated by kinases such as VEGFR, EGFR, and Src family kinases.
Q3: Does this patent cover methods of synthesis?
A3: Yes, the patent includes claims directed toward synthetic routes for preparing the claimed compounds, providing additional legal coverage.
Q4: How does this patent fit within the global patent landscape?
A4: The patent family extends to various jurisdictions, including Europe, China, Japan, and Australia, ensuring broad international protection for the invention.
Q5: Can competitors design around this patent?
A5: Yes, by modifying substituents or core structures outside the scope of the claims or targeting different kinases, competitors can potentially circumvent the patent, subject to patentability criteria.
References
[1] U.S. Patent No. 7,919,598, "Method of treating diseases with a compound," Johnson & Johnson, April 5, 2011.
[2] Related patent filings and literature on kinase inhibitors and heterocyclic compounds.
[3] Patent landscape reports on kinase inhibitors, 2011-2022.
This detailed analysis aims to inform stakeholders about the scope and strategic relevance of U.S. Patent 7,919,598 within the pharmaceutical patent landscape.
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