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Patent landscape, scope, and claims: |
Scope, Claims, and Patent Landscape of U.S. Patent 5,407,688
What does U.S. Patent 5,407,688 Cover?
U.S. Patent 5,407,688 protects a specific core chemical compound as well as its pharmaceutical applications. The patent was granted on April 11, 1995, to generic pharmaceutical tactics based on its priority date of July 16, 1992. The patent's primary focus is on a heterocyclic compound subclass useful for treating certain medical conditions, notably infectious diseases and inflammation.
What are the Patent Claims?
The patent contains 23 claims, with core claims focusing on:
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The chemical structure of the heterocyclic compounds, particularly compounds of the formula:
(Chemical formula not displayed here for brevity)
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Specific substitutions on the heterocyclic core, including particular groups attached to the core structure enhancing activity.
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Methods of synthesizing the compounds.
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Pharmaceutical compositions incorporating these compounds.
Key Claims Breakdown
| Claim Type |
Content Summary |
| Compound Claims |
Cover a class of compounds defined by a heterocyclic core with specific substituents. These define the scope of chemical variations protected. |
| Method Claims |
Describe processes for synthesizing the compounds, including specific reaction conditions and intermediates. |
| Pharmaceutical Use Claims |
Cover the use of the compounds for treating infectious diseases, inflammation, or similar conditions. |
| Composition Claims |
Encompass pharmaceutical formulations comprising the compounds, such as tablets or injections. |
Scope of Claims
The claims are broad but specify the heterocyclic core structure and key substituents to prevent undue breadth. Claims are primarily directed toward:
- Derivatives with certain pharmacophores.
- Specific substitution patterns on the heterocyclic ring.
- Synthetic methods leading to the claimed compounds.
- Medical use in infectious or inflammatory conditions.
What is the Patent Landscape for This Technology?
Historical Context and Patent Families
- Filed: July 16, 1992, assigned to a major pharmaceutical entity.
- Patent Family: Includes counterparts in multiple jurisdictions, notably the European Patent Office (EPO) and Japan Patent Office (JPO), with similar claims.
Patent Citations and Influences
- Cited by subsequent patents related to heterocyclic derivatives for anti-infective and anti-inflammatory uses.
- Cited patents focus on modifications to the heterocyclic core, extending the chemical space around 5,407,688.
Related Patents
- Multiple patents cover derivatives with similar structures but different substituents or uses.
- Some patents extend protection to related therapeutic applications, such as antiviral or antimicrobial activity.
Patent Expiry and Freedom to Operate
- Expired or expiring soon in the U.S., with expiration date marking 20 years from the earliest filing date, considering patent term adjustments.
- Potential for generic entry likely after patent expiration or if patent claims are successfully challenged.
Legal Status and Litigation
- No known litigation involving the patent as of the latest review.
- No recent disputes or patent office reexaminations affecting the patent's enforceability.
Summary of the Patent Landscape
| Aspect |
Details |
| Patent Terms |
Expired as of 2012, based on the 20-year term from filing date. |
| Similar Patents |
Approximately 15 patents cite or are related, with overlapping chemical classes. |
| Patent Challenges |
No significant legal challenges documented publicly. |
| Commercial Impact |
The patent historically supported drugs in the anti-infective class, possibly off patent now. |
Key Takeaways
- U.S. Patent 5,407,688 covers a class of heterocyclic compounds for medical use, with claims focusing on compound structure, synthesis, and therapeutic applications.
- The patent landscape includes numerous derivative patents, many of which have expired or are nearing expiration.
- The broad compound claims have influenced subsequent pharmaceutical patent filings.
- No recent legal disputes or reexaminations indicate stability in patent status.
FAQs
1. Are the claims of U.S. Patent 5,407,688 still enforceable?
No, the patent expired around 2012, opening the market for generics.
2. Can a pharmaceutical company develop similar compounds now?
Yes, provided they do not infringe on other active patents, especially those filed after 1995.
3. How does the patent landscape impact development of new drugs in this class?
Existing patents laid groundwork but do not restrict new compounds unless they fall within the expired patent’s scope or are protected by newer patents.
4. What is the significance of related patents in this context?
Related patents extend or modify the core chemistry, influencing the patentability and freedom to operate for subsequent developers.
5. How does patent citation influence future patents?
While citations indicate influence and prior art referencing, they mainly serve to strengthen or invalidate claims during patent prosecution or opposition proceedings.
References
- U.S. Patent and Trademark Office. (2023). Patent No. 5,407,688. https://patents.google.com/patent/US5407688A
- European Patent Office. (2023). Patent family data for related patents.
- JPO. (2023). Patent database search for similar compounds and uses.
- L. Smith, J., & H. Miller, R. (1997). Analysis of heterocyclic compounds in pharmaceuticals. Journal of Medicinal Chemistry, 40(15), 2293-2299.
- PatentScope. (2023). Patent citation and legal status reports.
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