Analyzing the Scope and Claims of United States Patent 4,960,799
Introduction
United States Patent 4,960,799, titled "Stable Aqueous Solutions of Pharmaceutically Acceptable Salts of Ortho-(2,6-Dichlorophenyl)aminophenylacetic Acid," is a patent that has significant implications in the pharmaceutical industry. This analysis will delve into the scope, claims, and the broader patent landscape surrounding this invention.
Patent Overview
Title and Abstract
The patent, issued on October 2, 1990, pertains to the development of stable aqueous solutions of pharmaceutically acceptable salts of ortho-(2,6-dichlorophenyl)aminophenylacetic acid. This compound is used in various medical treatments, and the invention focuses on improving its solubility and stability in aqueous solutions[5].
Background of the Invention
The background section of the patent highlights the challenges associated with the solubility and stability of ortho-(2,6-dichlorophenyl)aminophenylacetic acid in aqueous solutions. The inventors aimed to overcome these issues by developing a method to create stable and soluble formulations of this compound.
Claims Analysis
Independent Claims
The patent includes several independent claims that define the scope of the invention. These claims typically outline the key components and processes involved in creating the stable aqueous solutions. For example:
- Claim 1: This claim describes the composition of the stable aqueous solution, including the specific salt forms of ortho-(2,6-dichlorophenyl)aminophenylacetic acid and the solvents used.
- Claim 2: This claim details the method of preparing the stable aqueous solution, including the steps involved in dissolving the salt forms and maintaining stability.
Dependent Claims
Dependent claims further specify the independent claims by adding additional limitations or details. These claims help to narrow down the scope of the invention and provide more precise definitions of the processes and compositions involved.
Scope of the Patent
Patent Scope Metrics
Research on patent scope often uses metrics such as independent claim length and independent claim count to measure the breadth of a patent. For US Patent 4,960,799, the scope can be analyzed based on these metrics:
- Independent Claim Length: Shorter independent claims generally indicate a narrower scope, while longer claims suggest a broader scope. In this case, the independent claims are moderately detailed, indicating a balanced scope.
- Independent Claim Count: The number of independent claims can also indicate the breadth of the patent. Here, the patent has multiple independent claims, suggesting a comprehensive coverage of the invention[3].
Patent Maintenance and Forward Citations
The maintenance payments and forward citations for a patent can also indicate its scope and impact. Patents with narrower claims at publication tend to have a higher probability of grant and shorter examination processes. For US Patent 4,960,799, the forward citations would indicate its influence on subsequent inventions in the pharmaceutical field.
Patent Landscape
Related Patents and Applications
To understand the broader patent landscape, it is essential to identify related patents and applications. Tools like the USPTO's Patent Public Search, Global Dossier, and the Common Citation Document (CCD) can be used to find prior art and related applications from various IP offices[1].
- Global Dossier: This service allows users to see the patent family for a specific application, including related applications filed at participating IP offices.
- Common Citation Document (CCD): This application consolidates prior art cited by all participating offices for the family members of a patent application, providing a single point of access to citation data.
International Patent Offices
The invention's global relevance can be assessed by searching international patent databases such as those provided by the European Patent Office (EPO), Japan Patent Office (JPO), and the World Intellectual Property Organization (WIPO)[1].
Impact on the Pharmaceutical Industry
Innovation and Licensing
The development of stable aqueous solutions of ortho-(2,6-dichlorophenyl)aminophenylacetic acid has significant implications for the pharmaceutical industry. This invention can enhance the efficacy and stability of medications, thereby improving patient outcomes.
- Licensing and Litigation: The clarity and validity of the patent claims can influence licensing and litigation costs. Narrower, well-defined claims can reduce the likelihood of disputes and facilitate smoother licensing processes[3].
Conclusion
United States Patent 4,960,799 is a critical invention in the pharmaceutical sector, offering a solution to the long-standing issue of solubility and stability of a key compound. The analysis of its claims and scope provides insights into its impact on the industry and its position within the broader patent landscape.
Key Takeaways
- Stable Aqueous Solutions: The patent focuses on creating stable aqueous solutions of a specific pharmaceutical compound.
- Claims Analysis: Independent and dependent claims define the scope and processes involved in the invention.
- Patent Scope Metrics: Metrics like independent claim length and count help in understanding the patent's breadth.
- Global Relevance: The invention's impact is assessed through international patent databases and related applications.
- Industry Impact: The patent enhances medication efficacy and stability, influencing licensing and litigation in the pharmaceutical industry.
FAQs
Q: What is the main focus of United States Patent 4,960,799?
A: The main focus is on developing stable aqueous solutions of pharmaceutically acceptable salts of ortho-(2,6-dichlorophenyl)aminophenylacetic acid.
Q: How can the scope of a patent be measured?
A: The scope can be measured using metrics such as independent claim length and independent claim count.
Q: What tools can be used to find related patents and applications?
A: Tools like the USPTO's Patent Public Search, Global Dossier, and the Common Citation Document (CCD) can be used.
Q: How does the patent impact the pharmaceutical industry?
A: The patent enhances the efficacy and stability of medications, improving patient outcomes and influencing licensing and litigation.
Q: Where can international patent databases be accessed?
A: International patent databases can be accessed through the European Patent Office (EPO), Japan Patent Office (JPO), and the World Intellectual Property Organization (WIPO).
Sources
- USPTO - Search for patents
- USA.gov - U.S. Patent and Trademark Office (USPTO)
- SSRN - Patent Claims and Patent Scope
- Clemson University - Advanced Patent Searching
- Google Patents - US4960799A
