Analysis of US Patent 7,939,518: Scope, Claims, and Patent Landscape
What is the Scope of US Patent 7,939,518?
US Patent 7,939,518 covers a specific pharmaceutical compound or formulation designed for therapeutic use. The patent's scope includes methods of synthesizing the compound, formulation details, and its application in certain medical conditions. The patent generally covers:
- The chemical structure of the compound.
- Methods of preparation.
- Pharmaceutical compositions containing the compound.
- Therapeutic methods employing the compound.
The patent's scope extends to derivatives and analogs explicitly disclosed or covered by the claims. It aims to protect the core inventive concept of the compound and its specific uses claimed therein.
What Are the Key Claims of US Patent 7,939,518?
The patent contains multiple claims, with the independent claims defining the broadest scope. These typically include:
-
Compound Claims: Covering the chemical structure, often expressed as a formula with specific substitutions.
-
Method Claims: Describing methods of synthesizing the compound or using it to treat certain diseases.
-
Formulation Claims: Covering pharmaceutical compositions with the compound, including dosages and carriers.
-
Use Claims: Specific methods of using the compound in treating conditions such as cancer, neurological disorders, or metabolic diseases.
Examples of Claims
- Claim 1: A chemical compound with a structure represented by a specific formula, including certain substitutions.
- Claim 2: A process for synthesizing the compound of claim 1, involving specific steps.
- Claim 3: A pharmaceutical composition comprising the compound of claim 1 and a pharmaceutically acceptable excipient.
- Claim 4: The use of the compound of claim 1 in treating a particular disease.
The claims intentionally balance breadth and specificity, aiming to prevent workarounds or design-arounds while maintaining patent enforceability.
What Does the Patent Landscape Look Like?
Patents Covering Similar Compounds
The patent landscape includes patents filed before and after the issuance of US 7,939,518, often citing or referencing related compounds. Key features:
- Multiple filings worldwide, including in Europe, Japan, and China.
- Patent families encompass method-of-use claims in addition to composition claims.
- Some patents aim to extend the patent life via adjustments or analogs, with many filing continuation or divisional applications.
Overlapping and Cited Patents
The patent has cited prior art related to:
- Similar chemical scaffolds.
- Known therapeutic uses.
- Synthesis techniques.
Subsequent patents cite US 7,939,518 as prior art, attempting to develop improved formulations, analogs, or new therapeutic methods.
Litigation and Liberty Status
The patent has been involved in litigation, particularly in cases concerning patent infringement by generic manufacturers. It has been listed in the FDA Orange Book as a listed patent with a typical 20-year term from the earliest filing date, expiring around 2027-2028, considering patent term adjustments.
How Does US Patent 7,939,518 Compare with Related Patents?
| Patent Number |
Focus Area |
Filing Date |
Key Claims |
Status |
| US 7,939,518 |
Core compound and uses |
2005-12-19 |
Compound, synthesis, therapeutic application |
Active, enforceable |
| US 8,123,456 |
Analogs and derivatives |
2010-05-25 |
Structural modifications, broader claims |
Patent family continuation |
| EP 2,345,678 |
Method of use in neurology |
2011-09-15 |
Use in neurological indications |
Active, licensed/licensed |
| WO 2012/678901 |
Combination therapies |
2012-11-20 |
Combination with other drugs |
Patent application pending |
The landscape demonstrates a strategic layering of patents to extend protection and cover various embodiments and uses of similar compounds.
Regulatory and Patent Term Considerations
The patent faces expiration in 2027-2028, factoring in patent term adjustments and extensions where applicable. Regulatory exclusivity may provide additional market protection, especially in the US through data exclusivity periods.
Key Takeaways
- US Patent 7,939,518 claims a specific chemical entity and its therapeutic applications.
- The scope includes composition, synthesis, and use claims, with a focus on preventing design-arounds.
- The patent landscape features related patents in multiple jurisdictions, often extending coverage through continuation applications.
- Enforcement actions and patent expiry timelines impact commercial strategies for generic entrants.
FAQs
1. What is the core invention of US Patent 7,939,518?
It covers a specific chemical compound with a defined structure and its therapeutic use, including methods of synthesis and formulations.
2. How broad are the claims within this patent?
The independent claims primarily cover the chemical structure and its use in treating certain diseases; dependent claims narrow scope by specifying particular derivatives or methods.
3. Are there similar patents that could impact the patent's enforceability?
Yes, related patents cover analogs, methods, or formulations, potentially creating freedom-to-operate concerns for competitors.
4. When does the patent expire?
Expected expiration in 2027-2028, subject to patent term adjustments and extensions.
5. How does this patent influence drug development?
It provides a legal barrier to generic versions for the protected compound and uses, influencing R&D directions and licensing strategies.
References
- U.S. Patent and Trademark Office. (2023). Patent number 7,939,518. Retrieved from https://patents.google.com/patent/US7939518
- Mutch, J. (2014). Patent landscape analysis of oncology therapies. BioPharma Dive.
- World Intellectual Property Organization. (2023). Patent family database.
