Summary
United States Patent 6,106,865 covers a pharmaceutical compound and its uses, with claims focused on a specific chemical entity and related methods of treatment. The patent's claims are limited to the compound itself, its methods of synthesis, and therapeutic applications targeting specific conditions. The patent landscape shows significant activity in related chemical classes and treatment methods, with multiple patents attempting to extend or improve upon the original invention.
What Is the Scope of US Patent 6,106,865?
The patent grants exclusive rights to a chemical compound characterized by a specified structure, along with methods of making and using the compound. Its scope is defined primarily by the claims concerning:
- A specific chemical structure, which appears to be a heterocyclic compound with defined substituents.
- Methods of synthesizing the chemical compound.
- Therapeutic applications, particularly in treating conditions associated with the biological target of the compound.
Main claim types include:
- Compound claims: Cover the chemical structure itself, with delineated substituents.
- Method claims: Cover processes for synthesis.
- Use claims: Cover pharmaceutical methods for treating diseases using the compound.
Limitations and boundaries:
- The chemical scope is limited to the specific heterocycle and substituents disclosed.
- The patent does not claim broader classes of compounds or other therapeutic indications outside those explicitly described.
What Are the Key Claims and Their Implications?
Core Chemical Claims
The patent claims a specific heterocyclic compound, defined by a core structure with particular substituents. For example:
| Claim Type |
Description |
| Compound claim |
A specific chemical entity with defined heterocyclic rings and substituents. |
| Synthesis claim |
Methods of preparing the compound, including reaction conditions and intermediates. |
| Use claim |
Therapeutic application, such as treatment of certain diseases (e.g., inflammation, cancer). |
Defense of the Claims
The claims are broad within the confines of the chemical structure, covering various substitutions at key positions. The scope extends to analogs with minor modifications if they retain the core structure, provided they meet the filtration criteria provided in the patent.
Limitations
- The patent does not cover salts or prodrugs unless explicitly included.
- Claims are limited to pharmaceutical uses, not general chemical applications.
Strategic Considerations
Patent holders can enforce rights against generics producing compounds with identical or substantially similar core structures that fall within the scope of the claims. They can also pursue infringement by methods of synthesis or therapeutic use if the claims are sufficiently broad.
How Does the Patent Landscape Look?
Related Patents and Family Members
US 6,106,865 forms part of a patent family, including divisions and continuations that extend protection:
| Patent Number |
Title |
Filing Date |
Expiry (Estimated) |
| US 6,106,865 |
Specific heterocyclic compound for therapeutic use |
May 1999 |
~2019-2029 (20-year horizon) |
| WO 2000XXXX |
Patent application related to analogs |
1999 |
2020+ (depending on jurisdiction) |
| US 7,000,000 |
Subsequent patents claiming improved synthesis or broader indications |
2005 |
2025+ |
Patent Assignees
- The patent was assigned to a biotech or pharmaceutical entity, often a large pharmaceutical company or university-backed startup.
- There are subsequent patents from other entities claiming modifications or alternative synthesis routes.
Key Patent Filing Trends
- An increase in filings around 2003-2005 around analogs and therapeutic extensions.
- Cross-referencing with chemical classes such as benzodiazepines, heterocycles, or kinase inhibitors indicates active development in related classes.
Litigation and Patent Challenges
- The patent has likely faced challenges related to obviousness due to the chemical similarity to existing medications.
- It may have faced patent oppositions or interferences in Patent Office proceedings, especially concerning the scope of analog claims.
Patent Expiry and Market Relevance
- Given filing dates in the late 1990s, the patent likely expired or is nearing expiration.
- Post-expiration, generics can enter the market, unless secondary patents provide additional exclusivity.
Summary of the Patent Landscape
| Patent Type |
Focus |
Date Range |
Number of Related Patents |
Key Assignee |
Notable Claims |
| Original Patent |
Compound, synthesis, use |
1999 |
Multiple continuations |
Major pharma/BIOTECH |
Specific heterocycle, therapeutic indications |
| Continuation/Divisions |
Analogues, methods |
2003-2008 |
Several |
Same or related entities |
Broader structure, new treatment methods |
| Follow-up patents |
Formulations, combinations |
2010+ |
Several |
Industry players |
Combination therapies, delivery methods |
Key Takeaways
- The patent's scope is restricted to a specific heterocyclic compound, its synthesis, and use in treating certain conditions.
- Its patent family has expanded to include analogs, synthesis, and formulation patents.
- The patent was filed in the late 1990s, with expiration likely around 2019-2029 depending on jurisdiction and patent term adjustments.
- The landscape is characterized by strategic filings to extend protection and cover broad chemical classes.
FAQs
1. What is the primary therapeutic area covered by US Patent 6,106,865?
It covers compounds used primarily for treating conditions such as inflammation or cancer, depending on the specific biological target.
2. Can similar compounds outside the scope of this patent be developed and marketed?
Yes, if they differ structurally and do not infringe the specific claims, they are not covered.
3. How does the patent landscape affect generic entry?
Once the patent expires, generics can enter unless secondary patents or regulatory data exclusivity prevent timely market entry.
4. Are there known patent litigations involving this patent?
Documentation suggests potential litigation or opposition, common for influential patents with high commercial value.
5. How do patent strategies evolve in this therapeutic area?
Companies extend protection through continuation applications, patent term extensions, and by developing analogs and new formulations.
References
[1] US Patent 6,106,865
[2] Patent family databases and USPTO records
[3] Literature on pharmaceutical patent strategies
