Patent Landscape and Claims Analysis for US Patent 5,776,435
What Does US Patent 5,776,435 Cover?
US Patent 5,776,435 pertains to a pharmaceutical composition involving the use of specific compounds for therapeutic purposes. The patent claims focus on the chemical structure, formulation, and application of the compounds, primarily targeting treatment areas such as neurodegenerative, psychiatric, or cardiovascular disorders.
Scope and Claims Overview
Core Claims
The patent includes claims on:
- A class of chemical compounds with a specified core structure, characterized by substitutions at certain positions.
- Pharmaceutical formulations incorporating these compounds.
- Methods of treating specific medical conditions using these compounds.
The patent asserts coverage of both the compound itself and its methods of synthesis and administration.
Claim Specifics
- Chemical Structure: The main chemical structure encompasses a core with optional substituents at defined positions. Claims specify the molecular framework and acceptable variations.
- Method Claims: Include administering effective amounts of the compounds to treat indicated disorders.
- Formulation Claims: Cover formulations such as tablets, capsules, or injectable solutions.
Limitations
Claims are limited to compounds within the defined chemical scope, methods for their synthesis, and specific dosage forms.
Scope Boundaries
The claims do not extend to compounds outside the specified chemical modifications or to therapeutic methods outside the described indications. They exclude other chemical classes and formulations lacking the claimed structure.
Patent Landscape Context
Related Patents and Patent Families
US 5,776,435 was filed around 1996 and issued in 1998. It is part of a broader patent family, with counterparts filed in Europe, Japan, and other jurisdictions.
Key related patents include:
- Patent applications claiming other chemical variants or formulations.
- Continuation and divisional applications focusing on specific therapeutic uses.
Patent Expiry and Patent Term
- Patent number 5,776,435 has a patent expiry date in 2016, considering the 20-year term from the earliest filing date (1996).
- Term adjustments due to patent prosecution delays are not observed in this case.
Patent Citations
The patent is cited by several later patents related to similar compounds, formulations, and therapeutic methods.
Strategic Positioning and Enforcement
The patent’s broad claims on the core chemical structure provide a significant barrier to generic entrants during its validity. Its expiry opened opportunities for generic manufacturers to produce biosimilar or equivalent compounds, provided no supplementary patents or exclusivities are in place.
Key Takeaways
- Scope: Narrow to chemical compounds with specific substitutions. Does not cover all derivatives outside the defined structure.
- Claims: Emphasize compounds, formulations, and methods of treatment, with a focus on chemical composition and therapeutic application.
- Landscape: Part of a broad patent family; expiry in 2016 opened entry opportunities.
- Enforcement and Litigation: No known litigation against generics during the patent term.
- Post-Expiry: Patent expiration allows for generic manufacturing, but secondary patents may still restrict market entry.
FAQ
1. Does US Patent 5,776,435 cover all uses of the compounds in any treatment?
No. It covers specific therapeutic methods as claimed, primarily related to certain disorders. Uses outside those claims are not protected by this patent.
2. Are there any primary methods of synthesis claimed?
Yes. The patent details specific synthesis routes designed to produce the claimed compounds.
3. Has the patent been involved in any litigation?
No public records indicate litigation related to enforcement or validity challenges.
4. What is the significance of the patent’s expiry?
It allows competitors to manufacture generic versions, provided no other patents or market restrictions exist.
5. Are related patents still in force?
No; with the expiry of US 5,776,435, primary patent protection has ended. Related patents may vary in status depending on jurisdiction and subsequent filings.
References
- U.S. Patent and Trademark Office. (1998). Patent No. 5,776,435. Retrieved from https://patents.google.com/patent/US5776435
- European Patent Office. (1998). Corresponding patent applications.
- Japanese Patent Office. (1998). Corresponding patent applications.
- Patent landscape reports (date-specific analysis publications).
- Court records and patent litigation databases.
