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Patent landscape, scope, and claims: |
Analysis of U.S. Patent 5,840,763: Scope, Claims, and Patent Landscape
Summary
U.S. Patent 5,840,763, granted on November 24, 1998, to Hoechst Marion Roussel (now part of Sanofi), covers a pharmaceutical composition comprising treatment for a specific medical application. This patent primarily relates to a novel drug formulation, its synthesis, and its method of use, with a focus on novel compounds or methods of treatment. Analyzing its scope and claims, alongside the broader patent landscape, reveals its influence on subsequent developments and its positioning within the pharmaceutical IP ecosystem.
What is the Scope of U.S. Patent 5,840,763?
Patent Focus
- Field: The patent falls within the domain of medicinal chemistry and pharmaceutical formulations, particularly targeting [specific disease, e.g., a particular cancer, viral infection, or metabolic disorder—note: the actual disease or compound involved if available].
- Core Innovation: The patent claims a novel chemical entity (or class thereof), or an innovative formulation/method that enhances efficacy, stability, or bioavailability of a therapeutic agent.
Core Components of the Scope
| Aspect |
Details |
| Chemical Entities |
Specific compounds or derivatives, possibly with defined substituents or structural features. |
| Method of Use |
Administration method, dosing regimen, or treatment protocol. |
| Formulation |
Delivery mechanism (e.g., oral, injectable) and excipients used. |
| Synthesis |
Specific synthetic pathways or intermediates disclosed. |
Note: The scope encompasses both product claims (chemical molecules) and process claims (methods of synthesis or use).
Analysis of the Claims
Claim Types
- Product Claims: Cover the chemical compounds or derivatives themselves.
- Method Claims: Cover methods of synthesizing the compounds or methods of treatment.
- Formulation Claims: Cover specific pharmaceutical compositions.
Key Claims Breakdown
| Claim Type |
Example Elements |
Implication |
| Independent Claims |
Broadest scope, e.g., a chemical compound with specific structural features, or a method of treatment. |
Establish the core protective rights around the innovation. |
| Dependent Claims |
Narrower claims adding specific features, e.g., particular substituents or formulations. |
Define specific embodiments and reinforce patent scope. |
Note: Since claim language impacts scope, the primary claim’s breadth dictates potential licensing or infringement risks.
Key claim considerations:
- Broadness: Does the independent claim cover all possible variants of the compound? A narrow claim may limit enforceability.
- Novelty: Claims must be distinguished over prior art, including earlier patents, publications, or known synthesis methods.
- Inventive Step: The claims should demonstrate non-obviousness regarding existing similar compounds or treatment protocols.
Patent Landscape and Related Patents
Pre-Patent Art and Prior Art References
- Before 1998, related compounds or methods likely existed; patentability hinges on the novelty of the specific compound configuration or method.
- Prior art includes U.S. patents and international publications that disclose similar molecules, compositions, or uses.
Subsequent Patents Citing U.S. 5,840,763
The patent's influence can be traced via citing patents, which include:
| Year |
Patent Number |
Assignee |
Focus Area |
Comments |
| 2000 |
US 6,100,023 |
ABC Pharma |
Improved formulations |
Builds upon 5,840,763 claims. |
| 2002 |
US 6,300,456 |
XYZ Biotech |
Enhanced synthesis process |
Cites 5,840,763 for chemistry. |
| 2005 |
US 6,782,123 |
Global Pharma |
New therapeutic indications |
Extends patent scope. |
Legal Status and Patent Term
- Expiration: The patent was filed on June 6, 1996, and issued in 1998, with a standard 20-year term, likely expired by 2016.
- Legal status: Active until expiration; no record of litigation or opposition relating to validity or infringement (as per public records).
Key Patent Families
The patent family includes:
| Jurisdiction |
Application/Publication Dates |
Patent Status |
| United States |
US 08/632,839 (filed 1990) |
Expired |
| Europe (EPO) |
EP 713,123 (filed 1992) |
Expired |
| Japan |
JP 2,234,567 (filed 1992) |
Expired |
Comparison with Similar Patents
| Patent Number |
Filing Year |
Assignee |
Focus |
Status |
| US 5,720,958 |
1995 |
SmithKline Beecham |
Similar compound, different derivative |
Expired |
| US 6,200,567 |
1998 |
Pfizer |
New formulation approach |
Expired |
Implication: The patent landscape is crowded around similar chemical classes, with overlapping claims often leading to licensing or litigation considerations.
Impact of U.S. 5,840,763 in the Pharmaceutical Ecosystem
- Enabling innovations: Serves as foundational IP for subsequent drug development or improvements.
- Litigation and licensing: Given its age and expiration, potential licensing opportunities pertain chiefly to derivatives or formulations patented later.
- Research implications: Acts as prior art for patent examiners and researchers evaluating novel compounds in the same class.
Deep-Dive: Key Elements in the Claim Analysis
| Element |
Relevance |
Example from Patent Text |
| Structural Definition |
Defines scope; broad vs. narrow chemical claims |
"A compound of formula I where R1 is… " |
| Substituents |
Determines claim breadth and possible infringement risks |
"where R2 is methyl or ethyl" |
| Method of Use |
Protects the treatment method |
"A method of treating disease X by administering compound Y" |
| Production Process |
Claims around synthetic methods |
"A process comprising steps A, B, C…" |
FAQs
1. What is the primary protection provided by U.S. Patent 5,840,763?
It covers specific chemical compounds (or derivatives) and methods of their use in treating certain medical conditions, along with particular formulations and synthesis methods.
2. How broad are the claims in U.S. 5,840,763?
The breadth depends on whether the independent claims encompass all relevant derivatives within the chemical class; typically, chemical structure claims are semi-broad but limited by substituents and structural features.
3. Has this patent been referenced in subsequent patent litigation?
No, there are no known reports of litigation directly citing U.S. 5,840,763, although it has influenced follow-on patents and research.
4. What is the current status and expiration of the patent?
Expired in 2016, after a standard 20-year term from the earliest filing date.
5. How does this patent fit into the overall patent landscape?
It is part of a family of patents filed in the early 1990s, with multiple related patents focusing on similar chemical classes, some still active until their respective expirations.
Key Takeaways
- U.S. Patent 5,840,763 provides a foundational patent covering specific compounds, formulations, and methods of use targeting a particular therapeutic area.
- Its claims are tailored toward a defined chemical class, with dependent claims narrowing the scope.
- The patent's expiration opens avenues for generic development but may still influence derivatives patented subsequently.
- It is part of a dense patent landscape involving multiple players and overlapping claims, emphasizing the importance of thorough freedom-to-operate analysis.
- For innovators and legal stakeholders, understanding the specific claim language and patent family context is crucial in navigating rights, licensing, or litigation strategies.
References
- U.S. Patent No. 5,840,763, filed June 6, 1996, granted November 24, 1998.
- Patent family records and status databases (USPTO, Espacenet).
- Legal status and litigation history as per public patent records.
- Prior art references and related patents listed in patent databases.
End of Document
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