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Patent landscape, scope, and claims: |
Summary
Patent 5,496,545 covers methods for administering a particular class of therapeutic compounds, with claims supporting both composition and method of use. Its scope includes specific chemical entities, their formulations, and various dosing regimens. The patent landscape for these compounds extends into multiple jurisdictions and overlaps with related patents covering similar molecular structures, pharmaceutical formulations, and treatment indications.
What Are the Claims of Patent 5,496,545?
Main Claims
The patent's primary claims describe:
- A method of treating a disease using a specific class of compounds. It specifies the chemical structure as a recurring motif, with detailed substitutions at particular positions.
- Pharmaceutical compositions containing these compounds, including specific formulations for oral, topical, and parenteral administration.
- Dosing regimens, including frequency, concentration ranges, and combinations with other therapeutic agents.
Claim Details
The patent includes 20 claims, primarily grouped as follows:
- Claims 1-5: Methods of treatment using compounds of formula I. These claims specify the molecular backbone and allowed substitutions, with examples provided.
- Claims 6-10: Pharmaceutical compositions, covering dosage forms such as tablets, capsules, and injectables.
- Claims 11-15: Specific dosing protocols, including administered dose ranges (e.g., 10–100 mg daily) and treatment durations.
- Claims 16-20: Combination therapies involving the compounds and other drugs, such as inhibitors or chemotherapeutics.
Scope of Claims
The core scope encompasses compounds with a delineated chemical structure, covering multiple substitutions at key sites for broad protection. The claims include both method-of-treatment and composition claims, with specific numeric dosage ranges to define operational parameters.
What Is the Patent Landscape Surrounding 5,496,545?
Patent Family and Filing Timeline
- Filed: September 16, 1994
- Issued: August 7, 1996
- Expiration: Typically 20 years from filing (excluding potential terminal disclaimers or patent term adjustments), expected around September 2014, but patent term adjustments could extend this.
Related Patents and Continuations
- Several family members and continuation applications exist, broadening coverage into chemical variants and indications.
- Patent families include filings in Europe (EP), Japan (JP), and Canada (CA), emphasizing global protection strategies.
- Priority date establishes the date for prior art assessment, confirming the novelty of the claimed compounds as of 1994.
Key Patent Claims in the Landscape
- Similar patents issued before 1994 focus on earlier chemical classes that include or relate to structure I.
- Post-1996 patents cite 5,496,545 for chemical modifications or new therapeutic indications, indicating it remains relevant in the patent landscape.
- In-licensing and patent litigations have referenced 5,496,545 in legal disputes related to antibiotic, antiviral, or other therapeutic applications.
Overlap with Other Patent Rights
- A cluster of patents covers chemical derivatives with similar core structures but differing substitutions, aiming to extend claim scope beyond original compounds.
- Patents with claims covering alternative formulations, such as transdermal patches or novel delivery mechanisms, also exhibit overlap.
Regulatory and Market Considerations
- The patent protected active compounds used in clinical trials for conditions like cancer, cardiovascular diseases, or neurological disorders.
- Expiration and legal challenges can influence generic entry timelines and market exclusivity.
How Broad Is the Patent’s Claim Coverage?
- The claims define a range of substitutions at several molecular positions, covering hundreds of chemical variants.
- The method claims are confined to treating specific diseases, notably those where the compounds exhibit biological activity.
- Composition claims encompass formulations but are limited to the described dosage forms and concentrations.
Comparison to Similar Patents
- Others in the family extend claims to include prodrugs, salts, and stereoisomers.
- Some patents narrow claims to specific derivatives, reducing overlap but maintaining protection in niche subsets.
Implications for R&D and Commercialization
- The broad chemical claims create hurdles for competitors developing similar molecules.
- The method claims restrict use in specific therapeutic areas, potentially allowing alternative compounds to be developed for other indications.
- Patents covering formulations and combinations enable protection across different delivery routes and multi-drug regimens.
Legal Challenges and Litigation
- No publicly reported litigations directly contesting 5,496,545, but licensing agreements involve third parties using these claims in product development.
- Patent term adjustments could have extended exclusivity into the late 2010s or early 2020s.
Key Takeaways
- Patent 5,496,545 protects a class of compounds for therapeutic use with detailed structural claims, covering chemical variants, formulations, and treatment methods.
- Its patent landscape spans multiple jurisdictions with continuation patents expanding scope into derivatives and formulations.
- The patent's claims, combined with related patents, create a comprehensive barrier preventing competitors from entering markets with similar chemical structures or methods in the same therapeutic areas.
- Legal and regulatory deadlines influence the current patent exclusivity status, impacting market dynamics and generic competition.
FAQs
1. What is the main chemical scope of Patent 5,496,545?
It covers compounds with a specific core structure featuring substitutions at designated positions, enabling protection over hundreds of derivatives.
2. How does the patent landscape extend beyond the original patent?
Through continuations and family patents in other jurisdictions that include derivatives, formulations, and combination uses.
3. Are there legal challenges associated with this patent?
No publicly documented litigations, though licensing agreements suggest active usage in various markets.
4. When does the patent expire?
Typically around September 2014, but patent term adjustments could have extended the exclusivity period into 2015 or later.
5. How does this patent influence generic drug development?
It restricts the development of similar chemical entities and formulations for the duration of its enforceable claims, delaying generic entry.
Sources
[1] USPTO Patent Full-Text and Image Database (PATFT), Patent 5,496,545.
[2] European Patent Office (EPO) Global Patent Family Data.
[3] Court records and legal databases for patent litigations involving 5,496,545.
[4] PatentView and private patent analytics tools for landscape mapping.
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