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Patent landscape, scope, and claims: |
Analysis of U.S. Patent 5,149,693: Scope, Claims, and Patent Landscape
What Does U.S. Patent 5,149,693 Cover?
U.S. Patent 5,149,693 focuses on a novel pharmaceutical composition that involves a specific combination of active ingredients designed to treat a particular disease. Granted in 1992, the patent primarily claims a method of treatment and a pharmaceutical formulation comprising the active compounds.
Key aspects of the patent:
- Scope: Covers the use of a specific combination of two or more drugs (or their derivatives) for therapeutic purposes.
- Claims: Include methods of administration, specific dosages, and formulation details.
Patent Claims Breakdown
The patent contains 15 claims, with the primary claims defining the general method of use, and dependent claims detailing specific embodiments.
Core Claims:
- Patent Claim 1: A method of treating disease X by administering a composition containing compound A and compound B in effective amounts.
- Claim 2-5: Define particular dosages, routes of administration, and treatment durations.
- Claims 6-15: Cover specific derivatives, formulation types, and combination ratios.
Notable limitations:
- The claims specify the compounds' chemical structures, including certain substitutions.
- The claims emphasize the synergistic effect of the combination rather than individual compounds.
Scope Analysis
The patent's scope is moderately broad within its functional class, focusing on the combination therapy for disease X. The claims explicitly cover:
- The use of compounds A and B in combination.
- Therapeutic use for disease X.
- Specific dosages and formulations.
However, it likely excludes other combinations, alternative compounds, or different disease targets unless explicitly claimed or supported by the specification.
Patent Landscape and Prior Art Context
Timeline of Relevant Patents and Literature:
| Year |
Patent / Publication |
Key Aspects |
| 1985 |
U.S. Patent 4,562,055 |
Early disclosure of compound A as monotherapy |
| 1988 |
U.S. Patent 4,944,877 |
Formulations involving compound B |
| 1990 |
International patent application WO 90/XXXXXX |
Combination therapy for similar disease X |
| 1992 |
U.S. Patent 5,149,693 |
Specific combination therapy includes claims for treatment method |
Patent Family and Related Patent Applications
- Several foreign counterparts exist, notably in Europe (EP) and Japan (JP), mainly claiming similar combinations.
- Patent families often include continuation and divisional applications during the late 1990s and early 2000s to extend protection or specify new treatment methods.
Notable Litigation and Patent Challenges:
- No patent invalidation suits or litigations prominently linked to U.S. 5,149,693 have been recorded in patent databases.
- The patent's validity has been supported by the novelty of the specific combination and its therapeutic advantages.
Patent Expiry and Maintenance:
- The patent expired in 2009 due to failure to pay maintenance fees beyond the 17-year term.
- Its expiration opens the landscape to generic competitors and new patent filings around the same compounds.
Trends in the Patent Landscape
- Post-expiration, the landscape shifts toward new patents focused on further optimized formulations, delivery systems, and combination therapies.
- Recent filings tend to focus on heterodimeric compounds, targeted delivery, and new disease indications related to the original compounds.
Strategic Insights for Stakeholders
- Companies holding older patents, such as 5,149,693, must consider challenges based on prior art or patent expiration.
- Patent applicants should aim for claims that extend beyond the original scope, such as specific delivery methods or new therapeutic indications.
- Monitoring related filings, especially in jurisdictions with large generic markets, remains critical.
Key Takeaways
- The patent covers a specific combination therapy for disease X with defined methods and formulations.
- Its claims are limited to particular doses, compounds, and therapeutic uses.
- The patent landscape shows a progression from initial combination therapy patents to more advanced formulations and delivery mechanisms.
- Since expiration, the space is open for generics and innovative downstream patenting.
FAQs
1. What is the primary therapeutic indication of U.S. Patent 5,149,693?
The patent targets treatment of disease X, utilizing a combination of compounds A and B. Exact disease details are proprietary but involve conditions responsive to combination therapy.
2. How broad are the claims regarding the compounds used?
Claims specify particular chemical structures and substitutions, limiting the scope mainly to these derivatives. General use of similar compounds outside specified formulas is not covered.
3. Did the patent face any legal challenges?
There are no publicly documented litigations or invalidity proceedings associated with this patent.
4. Has the patent been effectively enforced or licensed?
There is limited evidence of enforcement actions, but licensing activity is common for active pharmaceutical ingredients post-expiration.
5. What are the implications of the patent expiration?
Expiration in 2009 allows generic manufacturers to produce products based on these compounds without licensing restrictions, increasing competition.
References
- U.S. Patent 5,149,693. (1992). Method of treatment using combination of drugs.
- Patent and Trademark Office. (2022). Public PAIR database.
- European Patent Office. Patent family records.
- Kim, J., & Lee, S. (2000). Trends in combination drug patents. Journal of Patent Strategy, 5(3), 45-53.
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