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Last Updated: April 3, 2025

Details for Patent: 5,242,471


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Summary for Patent: 5,242,471
Title: Coupling capillary gas chromatography to traditional liquid chromatography detectors
Abstract:Apparatus and methods are provided for using a detector designed for use with liquids to detect resolved analytes in an effluent stream from a gas chromatography instrument. The gaseous stream is entrained by a flowing liquid solvent, and at least a portion of the analytes are transferred from the gas phase to the liquid phase. The liquid solvent containing the analytes is then conveyed to a detector designed for liquid analysis. Thus, the present invention gives the analyst more options for detecting an analyte or a group of analytes, thereby providing greater flexibility in optimizing the sensitivity or selectivity of the analysis. Furthermore, the present invention allows gaseous effluents to be analyzed by detectors which more readily permit sample recovery than the detectors currently being used to analyze gaseous effluents.
Inventor(s): Markham; Dan A. (Rhodes, MI), Langvardt; Patrick W. (Midland, MI)
Assignee: The Dow Chemical Company (Midland, MI)
Application Number:07/887,996
Patent Claim Types:
see list of patent claims
Use; Formulation; Device; Delivery;
Patent landscape, scope, and claims:

Analyzing the Scope and Claims of United States Patent 5,242,471

Introduction

United States Patent 5,242,471, like any other patent, is a complex document that outlines the invention, its claims, and the scope of protection it affords. To understand this patent, we need to delve into its various components and the broader patent landscape.

Understanding Patent Claims

Patent claims are the heart of any patent, defining the scope of the invention and what is protected by the patent. Claims can be independent or dependent, with independent claims standing alone and dependent claims referring back to an independent claim[4].

Independent Claim Length and Count

Research has shown that the length and count of independent claims can be significant metrics for measuring patent scope. Patents with narrower claims, as indicated by shorter independent claim lengths and fewer independent claims, tend to have a higher probability of grant and a shorter examination process[3].

Patent Scope and Quality

The debate over patent quality often revolves around the breadth and clarity of patent claims. Patents with overly broad claims can lead to increased licensing and litigation costs, potentially diminishing innovation incentives. The scope of a patent, therefore, is crucial in determining its impact on the market and innovation[3].

The Patent in Question: 5,242,471

To analyze the scope and claims of United States Patent 5,242,471, one would typically start by identifying the independent claims. Here are some steps to follow:

Step 1: Identify the Independent Claims

  • Locate the independent claims within the patent document. These claims will define the core of the invention.
  • Analyze the language and specificity of these claims to understand the breadth of protection.

Step 2: Evaluate Claim Length and Count

  • Measure the length of the independent claims and count the number of independent claims.
  • Compare these metrics to industry standards to gauge the patent's scope and potential for litigation or licensing issues[3].

Step 3: Review Dependent Claims

  • Dependent claims build upon the independent claims and can provide additional specificity.
  • Evaluate how these dependent claims narrow down the scope of the independent claims.

Therapeutic Equivalence and Drug Patents

If the patent in question pertains to a drug, it might be listed in resources like the FDA's Approved Drug Products with Therapeutic Equivalence Evaluations. This list provides information on therapeutic equivalence, patent and exclusivity data, and other relevant details for approved drug products[1].

Public Search and Analysis Tools

Several tools are available for searching and analyzing patents:

Patent Public Search

  • The USPTO's Patent Public Search tool allows users to search prior art and access enhanced search capabilities[4].

Global Dossier

  • This service provides access to the file histories of related applications from participating IP Offices, helping to visualize the patent family and related data[4].

Common Citation Document (CCD)

  • The CCD consolidates prior art cited by multiple offices, facilitating a more comprehensive search[4].

Legal and Policy Considerations

The legal and policy landscape surrounding patents is complex. For instance, the concept of a small claims patent court has been explored to address issues related to patent litigation costs and accessibility. Such courts could potentially simplify the process for smaller entities to enforce their patent rights[2].

Impact on Innovation

The scope and claims of a patent can significantly impact innovation. Patents that are overly broad or lack clarity can lead to increased litigation and licensing costs, which may deter innovation. On the other hand, well-defined patents can provide clear boundaries and incentives for further innovation[3].

Key Takeaways

  • Patent Claims: The heart of any patent, defining what is protected.
  • Scope Metrics: Independent claim length and count are key metrics for measuring patent scope.
  • Public Search Tools: Utilize tools like Patent Public Search, Global Dossier, and CCD for comprehensive analysis.
  • Legal Considerations: The legal landscape, including potential small claims courts, can affect patent enforcement and innovation.
  • Innovation Impact: Well-defined patents can foster innovation by providing clear boundaries and incentives.

FAQs

Q1: What are the key components of a patent claim?

  • The key components include the preamble, the transitional phrase, and the body of the claim, which together define the scope of the invention.

Q2: How do independent claim length and count affect patent scope?

  • Shorter independent claim lengths and fewer independent claims are associated with narrower patents, which have a higher probability of grant and shorter examination processes.

Q3: What is the purpose of the Global Dossier service?

  • The Global Dossier service provides access to the file histories of related applications from participating IP Offices, helping users visualize the patent family and related data.

Q4: Why is the concept of a small claims patent court being explored?

  • The concept is being explored to address issues related to patent litigation costs and accessibility, particularly for smaller entities.

Q5: How can overly broad patent claims affect innovation?

  • Overly broad patent claims can lead to increased licensing and litigation costs, potentially diminishing innovation incentives.

Sources

  1. FDA's Approved Drug Products with Therapeutic Equivalence Evaluations - DrugPatentWatch
  2. U.S. Patent Small Claims Court - ACUS
  3. Patent Claims and Patent Scope - SSRN
  4. Search for patents - USPTO
  5. Subpart 2—Claims for Patent and Copyright Infringement - eCFR

More… ↓

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Drugs Protected by US Patent 5,242,471

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