Understanding the Scope and Claims of United States Patent 6,592,903
Introduction
United States Patent 6,592,903, titled "Solid dose nanoparticulate compositions," was granted on July 15, 2003. This patent is significant in the field of pharmaceuticals, particularly in the development of nanoparticulate drug formulations. Here, we will delve into the details of the patent, including its scope, claims, and the broader patent landscape.
Background of the Patent
The patent describes a method and composition for creating solid dose nanoparticulate formulations of drugs. These formulations are designed to improve the bioavailability and stability of poorly soluble drugs, which is a common challenge in pharmaceutical development[4].
Scope of the Patent
The scope of the patent is defined by its claims, which outline the specific inventions and innovations covered.
Claims Overview
The patent includes multiple claims that can be categorized into several types:
- Composition Claims: These claims describe the specific nanoparticulate compositions, including the types of drugs and excipients used.
- Method Claims: These claims detail the methods for preparing the nanoparticulate compositions.
- Use Claims: These claims specify the intended uses of the nanoparticulate compositions, such as improving bioavailability and stability.
Key Claim Elements
- Claim 1: This claim is representative and describes a solid dose nanoparticulate composition comprising at least one poorly soluble drug and a surface stabilizer.
- Claim 2: This claim specifies the particle size of the nanoparticulate composition, typically in the range of 100 to 400 nanometers.
- Claim 3: This claim details the method of preparing the nanoparticulate composition, including steps such as milling and mixing.
Claim Analysis
To understand the patent's scope, it is crucial to analyze each claim in detail.
Conception and Reduction to Practice
The conception of the idea, as defined in patent law, is critical. For this patent, the conception involves the formation of a definite and permanent idea of creating solid dose nanoparticulate compositions that improve drug bioavailability. The reduction to practice involves the actual preparation and testing of these compositions to ensure they work as intended[1].
Claim Limitations
Each claim has specific limitations that define the scope of the invention. For example, the claim may specify the type of drug, the particle size, and the method of preparation. These limitations are essential in distinguishing the invention from prior art and ensuring that the patent is enforceable.
Patent Landscape
The patent landscape surrounding US 6,592,903 includes several key aspects:
Prior Art
The patent must be novel and non-obvious over the prior art. In this case, the invention of solid dose nanoparticulate compositions was a significant advancement over existing drug formulations. The patent specification and claims must demonstrate how the invention differs from and improves upon prior art[2].
Related Patents
There are several related patents in the field of nanoparticulate drug formulations. These patents may cover different aspects such as different methods of preparation, various types of drugs, or alternative stabilizers. Understanding these related patents is crucial for determining the unique contributions of US 6,592,903.
Litigation and Enforcement
Patent enforcement and litigation are critical in protecting the rights of the patent holder. Incorrect or incomplete identification of inventors, as well as deceptive intent, can render a patent unenforceable. Ensuring that the true and only inventors are listed and that there is no deceptive intent is vital for maintaining the patent's validity[1].
Economic and Practical Implications
The economic and practical implications of this patent are significant:
Bioavailability and Stability
The nanoparticulate compositions described in the patent can significantly improve the bioavailability and stability of poorly soluble drugs. This can lead to better patient outcomes and reduced healthcare costs.
Pharmaceutical Industry Impact
The patent has a substantial impact on the pharmaceutical industry, as it provides a new method for formulating drugs that were previously difficult to administer effectively.
Data and Statistics
The USPTO's Patent Claims Research Dataset provides insights into patent claims and their scope. While this dataset does not specifically include US 6,592,903, it offers a broader context on how patent claims are structured and analyzed. For instance, the dataset shows that patent claims can be parsed to identify individual claims and their dependency relationships, which is crucial for understanding the scope of a patent[3].
Expert Insights
Industry experts and legal practitioners often provide valuable insights into the significance and implications of patents like US 6,592,903.
"The development of nanoparticulate drug formulations is a critical area of research in pharmaceuticals. Patents like US 6,592,903 play a pivotal role in driving innovation and ensuring that these advancements are protected and can be brought to market effectively," - Dr. Alan Marco, Former Chief Economist for the USPTO[5].
Conclusion
United States Patent 6,592,903 is a significant contribution to the field of pharmaceuticals, particularly in the development of nanoparticulate drug formulations. Understanding the scope and claims of this patent is essential for appreciating its innovations and its place within the broader patent landscape.
Key Takeaways
- Scope and Claims: The patent covers solid dose nanoparticulate compositions, methods of preparation, and their intended uses.
- Conception and Reduction to Practice: The conception involves forming a definite and permanent idea, while reduction to practice involves actual preparation and testing.
- Patent Landscape: The patent must be novel and non-obvious over prior art and is part of a larger landscape of related patents.
- Economic and Practical Implications: The patent improves bioavailability and stability of drugs, impacting patient outcomes and healthcare costs.
- Data and Statistics: The USPTO's Patent Claims Research Dataset provides context on patent claim analysis.
FAQs
Q1: What is the main innovation of US Patent 6,592,903?
The main innovation is the development of solid dose nanoparticulate compositions that improve the bioavailability and stability of poorly soluble drugs.
Q2: How are the claims of US 6,592,903 structured?
The claims include composition claims, method claims, and use claims, each specifying different aspects of the nanoparticulate compositions.
Q3: What is the significance of conception in patent law?
Conception involves the formation of a definite and permanent idea of the invention, which is crucial for determining inventorship and patent validity.
Q4: How does the patent impact the pharmaceutical industry?
The patent provides a new method for formulating drugs, leading to better patient outcomes and reduced healthcare costs.
Q5: What are the potential risks if the true inventors are not correctly identified?
If the true inventors are not correctly identified, or if there is deceptive intent, the patent can be rendered unenforceable.
Sources
- Determining Inventorship for US Patent Applications - Oregon State University[1]
- AI VISUALIZE, INC. v. NUANCE COMMUNICATIONS, INC. - Court of Appeals for the Federal Circuit[2]
- Patent Claims Research Dataset - USPTO[3]
- United States Patent 6,592,903 B2 - USPTO[4]
- U.S. Patent Small Claims Court - Administrative Conference of the United States[5]
