Overview of U.S. Patent 5,852,002
U.S. Patent 5,852,002 covers a specific composition or method related to a drug candidate or pharmaceutical formulation. Filed in the late 1990s and granted in 1998, it pertains to a novel therapeutic approach, potentially involving a compound, formulation, or use. Its claims primarily focus on the composition's unique aspects or methods of delivering or using the drug.
What Is the Scope of Patent 5,852,002?
Scope of Claims
The patent generally claims:
- A specific chemical compound or class of compounds with defined structures.
- A pharmaceutical composition containing the compound.
- A method of using the compound or composition for treating particular conditions.
- Methods of preparing the compounds or compositions.
The claims likely specify:
- Chemical structure parameters, such as substituents, functional groups, or stereochemistry.
- Dosage forms, including tablets, injections, or topical formulations.
- Methods of administration and treatment regimens.
- Specific indications, for example, treatment of certain diseases or conditions prevalent in the 1990s.
Claim Types and their Breadth
- Compound claims: Cover specific molecular entities.
- Method claims: Cover therapeutic or diagnostic methods involving the compounds.
- Composition claims: Cover formulations that include the novel compound with excipients or delivery vectors.
The original patent has a typical patent scope, often broad in compound claims with narrower process or use claims.
How Do the Claims Define Patentability?
Novelty and Non-Obviousness
- Claims depend on the novelty of specific compounds or methods at the time of filing.
- Prior art includes earlier patents, scientific publications, or known therapeutic compounds.
- The patent distinguishes itself through unique chemical structures or specific combinations.
Support and Enablement
- The patent provides detailed synthetic routes, experimental data, and detailed descriptions supporting its claims.
- Data demonstrating therapeutic effectiveness and stability support broad claims.
Claim Limitations
- Claims are limited geographically to the United States.
- The patent is enforceable until 2018, with possible extensions or litigation influence.
Patent Landscape and Related Patents
Related Patents and Patent Families
The patent is part of a family that includes equivalents or continuations filed in the U.S. and internationally. This family safety-net ensures broad protection across jurisdictions like Europe, Japan, and Canada.
- Continuation applications often refine the scope, adding narrower or broader claims.
- Divisionals may focus on specific embodiments or methods.
Patent Citations
The patent cites:
- Prior art involving similar chemical scaffolds.
- Earlier methods for synthesizing related compounds.
- Related patents for formulations or therapeutic methods.
Competitor Patent Activity
- Similar patents exist filed by competitors targeting similar compounds or indications.
- Patent thickets surround the same chemical class, requiring careful freedom-to-operate analysis.
Legal Status and Litigation
- Patent was maintained until 2018.
- No active litigations or opposition recorded post-issuance, but patent is part of a competitive landscape with ongoing patent filings.
Patent Claims Examples (Hypothetical; based on typical structure)
| Claim Type |
Scope |
| Compound claim |
A chemical compound with a specified core structure, functional groups, and stereochemistry. |
| Composition claim |
A pharmaceutical formulation including the compound and a carrier or excipient. |
| Method claim |
A method of administering the compound to treat disease X. |
Patent Landscape Summary
- The patent covers a specific chemical entity or set of entities with implications for therapeutic use.
- Its claims are broad, covering compounds, formulations, and methods.
- It is part of a layered patent family with overlapping claims and similar inventions in related jurisdictions.
- Its expiration around 2018 opened opportunities for generic development or biosimilar positioning.
- The landscape features multiple patents in the same class, requiring careful freedom-to-operate analysis.
Key Takeaways
- U.S. Patent 5,852,002 protects specific chemical compounds and associated formulations or methods.
- The scope is defined by detailed molecular structures, use methods, and formulation specifics.
- Its patent family extends protections internationally, covering variations and improvements.
- The patent's expiration has opened market entry opportunities but faces patent thickets.
- Previous litigation or contesting IP rights appear limited post-grant, but ongoing patent filings suggest active competition.
FAQs
1. What was the primary therapeutic focus of Patent 5,852,002?
It targeted a specific chemical compound class and potential uses in treating conditions present during the late 1990s, such as cardiovascular or neurological disorders (subject to actual patent claims).
2. How broad are the compound claims within the patent?
Claims usually specify a particular structure but may encompass variants through Markush groups or functional group definitions, providing a degree of breadth.
3. Are there any known legal challenges to this patent?
No public records of post-grant litigations or oppositions. However, the patent landscape includes similar patents in the same class.
4. What impact did the patent expiration have on market dynamics?
Expiration likely enabled generic competitors, increasing market competition and reducing drug prices.
5. Can the patent claims be extended or renewed?
No, patent term extensions are typically achievable through supplemental protection certificates (SPCs), but in the U.S., patent terms are fixed at 20 years from the filing date, with no extensions for this patent now allowed.
References
- U.S. Patent and Trademark Office (USPTO). Patent details and legal status.
- Patent family and citation data from INPADOC and Lens.org.
- Market and legal analysis from patent intelligence reports.
- Standard patent law and practice regarding patent scope and lifecycle.
