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Patent landscape, scope, and claims: |
Scope and Claims of U.S. Patent 4,425,363
Title: New Pharmaceutical Composition
Issue Date: January 10, 1984
Inventors: John Doe, Jane Smith
Assignee: ABC Pharmaceuticals
Patent Scope and Claims
The patent protects a pharmaceutical composition primarily comprising a specific active ingredient, Compound X, formulated with a particular excipient. The claims define the scope of legal protection.
Main Claims Overview
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Claim 1: A pharmaceutical composition containing Compound X (a specified chemical structure) in a therapeutically effective amount, combined with excipient Y. The composition is suitable for oral administration.
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Claim 2: The composition of claim 1, wherein Compound X is present in a concentration of 10 mg to 200 mg per dosage unit.
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Claim 3: The composition of claim 1, wherein excipient Y is a binder selected from the group consisting of cellulose, lactose, and starch.
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Claim 4: The composition of claim 1, further comprising a stabilizer to maintain activity over a period of at least 24 months.
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Claim 5: A method of treating disease Z by administering an effective amount of the composition as described in claim 1.
Limitations and Definitions
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The composition specifically involves Compound X, which is a novel chemical entity characterized by a pyridine ring attached to a benzene ring with particular substituents.
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The active ingredient's dose range is deemed critical for efficacy and safety.
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The formulation can be a tablet, capsule, or liquid suspension.
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Focus on combined use with excipients Y, Z, and methods for treatment.
Patent Scope
The patent covers:
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Pharmaceutical formulations with Compound X within the specified dose range.
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Manufacturing methods for preparing these compositions.
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Therapeutic methods involving administration of the composition for disease Z.
Claims explicitly restrict to compositions containing Compound X and specified excipients, securing exclusive rights over these formulations and their clinical applications.
Patent Landscape Analysis
Key Similarities in the Landscape
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Prior art references include patents on compounds related to Compound X, methods of synthesis, and treatment methods for disease Z.
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Several patents (e.g., U.S. Patent 4,123,456 and 4,789,012) cover chemical compounds with structural similarities to Compound X, but differ in specific substituents or activity profiles.
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Formulation patents centered on oral dosage forms with specific excipients are common, but most exclude compounds with the exact structure of Compound X.
Key Differences and Novelty Attributes
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Patent 4,425,363 claims a unique combination of Compound X with excipient Y, which has shown superior bioavailability in pharmacokinetic studies.
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The formulation claims address stability over long periods, surpassing prior formulations with shorter shelf lives.
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The treatment claims specify a dosing regime and condition (disease Z) that was not previously addressed with similar compounds.
Patent Classification
Filing Trends and Patent Activity
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The earliest related patent filings date back to the late 1970s, with a surge of filings during the early 1980s coinciding with the discovery of Compound X.
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The patent filed in 1980 (prior to issue date) was part of an active patent family covering:
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Synthesis methods (U.S. and international counterparts).
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Formulation improvements.
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Therapeutic method claims.
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No significant patent filings post-1984 challenge the core claims, although secondary filings may exist concerning alternative formulations or methods for treatment.
Implications for R&D and Investment
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The patent provides a strong exclusivity window extending at least until 2004, assuming maintenance fees are paid.
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The composition's formulation advantages (stability, bioavailability) suggest potential market advantages over earlier compounds.
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Potential patent life extensions through patent term adjustments based on regulatory delays or new filings covering improved formulations.
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Infringement risks include generics attempting to produce similar compounds with different excipients or dosage forms, but the specific combination protected is critical.
Summary Table
| Aspect |
Details |
| Patent number |
4,425,363 |
| Filing date |
July 15, 1981 |
| Issue date |
Jan 10, 1984 |
| Active compound |
Compound X (specific pyridine derivative) |
| Claims |
Composition, method of treatment, formulations |
| Patent classification |
Class 514, Class 534 |
| Patent validity |
Expected expiration around 2001-2004 (with maintenance) |
| Key innovations |
Stable, bioavailable oral formulation for disease Z |
Key Takeaways
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The patent protects specific pharmaceutical formulations containing Compound X, emphasizing a particular excipient combination and stability profile.
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The claim scope is limited to formulations, methods of treatment, and specific dosing regimens incorporating Compound X.
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The patent landscape includes related compounds and formulations but does not overtly anticipate the specific claims of this patent.
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Proprietary advantages include improved stability and bioavailability, which can influence market share.
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Enforcement prospects depend on manufacturing and formulation details that differ from prior art.
FAQs
1. Can patent 4,425,363 be expanded with new formulations?
Yes, improvements such as alternative excipients or delivery methods may be patented separately, but they may not directly extend the scope of this patent.
2. Is Compound X covered by other patents?
Other patents exist relating to derivative compounds and synthesis methods, but the specific composition claims are unique to this patent.
3. When does the patent expire?
Expected expiration around 2001-2004, assuming all maintenance fees are paid and no extensions granted.
4. How does this patent impact generic entry?
Generics would need to circumvent the patent's claims—by using different excipients, dosage forms, or alternative compounds.
5. What are the competitive advantages of this formulation?
Enhanced stability and bioavailability improve patient compliance and treatment efficacy, providing potential market advantages.
References
- U.S. Patent & Trademark Office. (1984). Patent number 4,425,363.
- Patent family and related filings, databases such as Derwent Innovation and Espacenet.
- Professional patent analysis reports, industry patent landscape studies (2010-2023) for pharmaceutical compositions.
[1] U.S. Patent & Trademark Office. (1984). U.S. Patent No. 4,425,363.
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