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Last Updated: December 22, 2024

Details for Patent: 4,313,951


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Summary for Patent: 4,313,951
Title: 3-Substituted-6-(lower-alkyl)-5-(pyridinyl)-2(1H)-pyridinones, their cardiotonic use and intermediates therefor
Abstract:1-R.sub.1 -3-[amino, cyano, carbamyl, halo, lower-alkylamino, di-(lower-alkyl)amino or lower-acylamino]-6-(lower-alkyl)-5-(pyridinyl)-2(1H)-pyridinones or pharmaceutically-acceptable acid-addition or cationic salts thereof are useful as cardiotonic agents, where R.sub.1 is hydrogen, lower-alkyl or lower-hydroxyalkyl. 1-R.sub.1 -3-amino-6-(lower-alkyl)-5-(pyridinyl)-2(1H)-pyridinones are prepared by hydrolyzing the corresponding 3-cyano compounds to produce the corresponding 3-carbamyl compounds and reacting the latter with a reagent capable of converting carbamyl to amino. The 1-R.sub.1 -3-cyano-6-(lower-alkyl)-5-(pyridinyl)-2(1H)-pyridinones are prepared by reacting (pyridinylmethyl) lower-alkyl ketones with dimethylformamide di-(lower-alkyl) acetal to produce 1-(pyridinyl)-2-(dimethylamino)ethenyl lower-alkyl ketone and reacting said ketones with N-R.sub.1 -.alpha.-cyanoacetamide to produce the 1-R.sub.1 -3-cyano-6-(lower-alkyl)-5-(pyridinyl)-2(1H)-pyridinones. Also shown are the conversions: of the 3-cyano compounds to the 3-H compounds; of the 3-H compounds to the 3-halo compounds; of the 3-halo compounds to the 3-[mono-(lower-alkyl)- or di-(lower-alkyl)-amino]compounds; and, of the 3-amino compounds to the 3-lower-acylamino or 3-[mono-(lower-alkyl)- or di-(lower-alkyl)amino] compounds.
Inventor(s): Lesher; George Y. (Schodack, NY), Philion; Richard E. (Schodack, NY)
Assignee: Sterling Drug Inc. (New York, NY)
Application Number:06/198,461
Patent Claim Types:
see list of patent claims
Compound; Composition; Use; Dosage form;
Patent landscape, scope, and claims:

Analyzing the Scope and Claims of United States Patent 4,313,951: A Comprehensive Guide

Introduction

Understanding the scope and claims of a patent is crucial for inventors, researchers, and businesses to navigate the complex landscape of intellectual property. This article will delve into the specifics of United States Patent 4,313,951, providing a detailed analysis of its scope, claims, and the broader patent landscape.

Understanding Patents and Their Components

Before diving into the specifics of US Patent 4,313,951, it is essential to understand the basic components of a patent.

What is a Patent?

A patent is a form of intellectual property that gives the owner the right to exclude others from making, using, selling, and importing an invention for a certain period of time, usually 20 years from the date of filing[4].

Key Components of a Patent

  • Title and Abstract: Provide a brief overview of the invention.
  • Background of the Invention: Contextualizes the invention within the existing field.
  • Summary of the Invention: A concise description of the invention.
  • Detailed Description of the Invention: A thorough explanation of how the invention works.
  • Claims: Define the scope of the invention and what is protected by the patent.
  • Drawings: Visual representations of the invention[1].

United States Patent 4,313,951: Overview

To analyze US Patent 4,313,951, we need to identify its key components.

Title and Abstract

The title and abstract provide the first glimpse into what the patent covers. For example, if the patent is titled "Method and Apparatus for [Specific Invention]," the abstract will briefly describe the method and apparatus in question.

Background of the Invention

This section explains the existing state of the art and any problems or limitations that the invention addresses.

Summary of the Invention

This section gives a concise overview of the invention, highlighting its main features and improvements over existing technologies.

Detailed Description of the Invention

Here, the inventors provide a detailed explanation of how the invention works, including any necessary drawings or diagrams.

Analyzing the Claims

The claims section is the most critical part of a patent as it defines the scope of protection.

Types of Claims

  • Independent Claims: Standalone claims that define the invention without reference to other claims.
  • Dependent Claims: Claims that refer back to and further limit an independent claim.
  • Method Claims: Describe a process or method.
  • Apparatus Claims: Describe a device or system[3].

Claim Construction

Claim construction involves interpreting the language of the claims to determine their scope. This process is crucial for understanding what is protected by the patent and what is not.

Scope of Protection

The scope of protection is determined by the claims. Here are some key points to consider:

Literal Infringement

Literal infringement occurs when another party makes, uses, sells, or imports an invention that meets all the elements of a claim.

Doctrine of Equivalents

This doctrine allows for infringement to be found even if the accused product or process does not literally meet all the elements of a claim but is equivalent in function, way, and result[3].

Patent Landscape Analysis

To fully understand the significance and impact of US Patent 4,313,951, it is essential to analyze the broader patent landscape.

Prior Art

Prior art refers to existing inventions and knowledge that were publicly available before the filing date of the patent. Conducting a thorough prior art search helps in understanding the novelty and non-obviousness of the invention[1].

Related Patents

Identifying related patents can help in understanding the evolution of the technology and potential competitors or collaborators.

International Patent Filings

Checking if the invention has been patented in other countries can provide insights into global protection and market opportunities[1].

Tools for Patent Analysis

Several tools and resources are available for conducting a thorough patent analysis:

USPTO Patent Public Search

This tool provides enhanced access to prior art and allows users to search through issued and published patents[1].

Global Dossier

This service allows users to view the file histories of related applications from participating IP Offices, providing a comprehensive view of the patent family[1].

Patent and Trademark Resource Centers (PTRCs)

These centers offer local search resources and training in patent search techniques, which can be invaluable for detailed analysis[1].

Case Study: Analyzing US Patent 4,313,951

Step-by-Step Analysis

  1. Retrieve the Patent Document: Obtain the full text of US Patent 4,313,951 from the USPTO database or other patent search tools.
  2. Review the Claims: Carefully read and interpret the claims to understand the scope of protection.
  3. Analyze the Detailed Description: Study the detailed description to understand how the invention works and its key features.
  4. Identify Prior Art: Conduct a prior art search to understand the novelty and non-obviousness of the invention.
  5. Check Related Patents: Identify related patents to understand the broader patent landscape.
  6. Evaluate International Filings: Check if the invention has been patented in other countries.

Example: Claim Analysis

For instance, if US Patent 4,313,951 includes a claim like "A method for [specific process] comprising steps A, B, and C," you would need to analyze each step to understand what is protected.

Challenges and Considerations

Patent Litigation

Understanding the scope and claims of a patent is crucial for avoiding or defending against patent litigation.

Licensing and Collaboration

Clear understanding of the patent's scope can facilitate licensing agreements and collaborations.

Innovation and Improvement

Analyzing existing patents can inspire new innovations and improvements.

Conclusion

Understanding the scope and claims of a patent like US Patent 4,313,951 is a complex but essential task. By using the right tools, conducting thorough analyses, and considering the broader patent landscape, inventors and businesses can navigate the intellectual property landscape effectively.

Key Takeaways

  • Claims Define Scope: The claims section of a patent defines what is protected.
  • Prior Art Search: Essential for understanding novelty and non-obviousness.
  • Use of Tools: Utilize USPTO resources and other patent search tools for comprehensive analysis.
  • International Considerations: Check for international filings to understand global protection.
  • Continuous Monitoring: Regularly monitor the patent landscape for updates and new filings.

FAQs

Q: How do I search for a specific patent like US Patent 4,313,951?

A: You can search for a specific patent using the USPTO's Patent Public Search tool or by visiting the USPTO Public Search Facility[1].

Q: What is the importance of claim construction in patent analysis?

A: Claim construction is crucial as it determines the scope of protection and what is considered an infringement[3].

Q: How can I identify related patents?

A: Use tools like the Global Dossier and search databases of international intellectual property offices to identify related patents[1].

Q: Why is prior art search important?

A: Prior art search helps in understanding the novelty and non-obviousness of the invention, which are key criteria for patentability[1].

Q: What resources are available for learning patent search techniques?

A: Resources include the USPTO's web-based tutorial, Patent and Trademark Resource Centers (PTRCs), and the USPTO Public Search Facility[1].

Sources

  1. USPTO - Search for patents. Retrieved from https://www.uspto.gov/patents/search
  2. US Courts - Report on Filing Patent/Trademark. Retrieved from https://www.uscourts.gov/forms-rules/forms/report-filing-patent-trademark
  3. USPTO - Patent Claims Research Dataset. Retrieved from https://www.uspto.gov/ip-policy/economic-research/research-datasets/patent-claims-research-dataset
  4. U.S. Department of Commerce - U.S. Patent and Trademark Office. Retrieved from https://www.commerce.gov/bureaus-and-offices/uspto

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Drugs Protected by US Patent 4,313,951

Applicant Tradename Generic Name Dosage NDA Approval Date TE Type RLD RS Patent No. Patent Expiration Product Substance Delist Req. Patented / Exclusive Use Submissiondate
>Applicant >Tradename >Generic Name >Dosage >NDA >Approval Date >TE >Type >RLD >RS >Patent No. >Patent Expiration >Product >Substance >Delist Req. >Patented / Exclusive Use >Submissiondate

International Family Members for US Patent 4,313,951

Country Patent Number Estimated Expiration Supplementary Protection Certificate SPC Country SPC Expiration
Argentina 230029 ⤷  Subscribe
Austria 379386 ⤷  Subscribe
Austria 379387 ⤷  Subscribe
Austria A143781 ⤷  Subscribe
Austria A578080 ⤷  Subscribe
Austria A95983 ⤷  Subscribe
Australia 2475384 ⤷  Subscribe
>Country >Patent Number >Estimated Expiration >Supplementary Protection Certificate >SPC Country >SPC Expiration

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