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Last Updated: December 21, 2024

Details for Patent: 5,057,616


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Summary for Patent: 5,057,616
Title: Podophyllotoxin purification process
Abstract:Podophyllotoxin is recovered from podophyllum resin with improved efficiency by adsorbing impurities out of a solution using a solid adsorbent, preferably alumina. This improvement finds application in an overall process for purifying podophyllotoxin from podophyllum resin in which the podophyllotoxin is first crystallized from the podophyllum resin, the crystals so formed are dissolved and subjected to the solid adsorbent treatment, crystals are then recovered and optionally recrystallized and dried to give the desired product.
Inventor(s): Jennings; Rex A. (Holland, MI), Stearns; Jay F. (Santa Rosa, CA)
Assignee: Oclassen Pharmaceuticals, Inc. (San Rafael, CA)
Application Number:07/415,170
Patent Claim Types:
see list of patent claims
Compound; Process; Formulation;
Patent landscape, scope, and claims:

Understanding the Scope and Claims of a US Patent: A Detailed Analysis of United States Patent 5,057,616

Introduction

When navigating the complex world of patents, understanding the scope and claims of a patent is crucial for inventors, businesses, and legal professionals. This article will delve into the specifics of United States Patent 5,057,616, using it as a model to explain the key components of a US patent, the importance of claim scope, and how to navigate the patent landscape.

Structure of a US Patent

A US patent, such as U.S. Patent 5,057,616, is divided into several key sections that provide essential information about the invention and its legal protections.

Cover Page

The cover page, or front page, of the patent includes bibliographic information such as:

  • Patent Number: The unique identifier assigned to the patent[2].
  • Title: A brief description of the invention.
  • Inventors: Names and places of residence of the inventors.
  • Assignees: Names and places of business of the patent owners.
  • Application Number: The number assigned by the patent office.
  • Filing Date: The date the patent application was filed.
  • International Classification: The International Patent Classification (IPC) code[2].

Specification

The specification section describes the invention in detail. It includes:

  • Background of the Invention: Context and prior art related to the invention.
  • Summary of the Invention: A concise overview of the invention.
  • Detailed Description of the Invention: A thorough explanation of how the invention works, often including drawings and diagrams[2].

Claims

The claims section is the most critical part of the patent as it defines the scope of the invention and what is legally protected.

Independent and Dependent Claims

  • Independent Claims: Standalone claims that include all necessary limitations and do not depend on other claims. For example, Claim 1 in U.S. Patent 5,057,616 would be an independent claim[2].
  • Dependent Claims: Refer back to and further limit another claim or claims. These include all the limitations of the claim they incorporate by reference[2].

Preamble and Body of a Claim

Each claim consists of a preamble and a body, connected by a transition word or phrase.

  • Preamble: An introductory statement naming the thing being claimed.
  • Body: Defines the elements or steps of the claimed invention[2].

Importance of Claim Scope

The scope of the claims is pivotal in determining the protection and validity of the patent.

Balancing Breadth and Specificity

A common misconception is that broader claims offer better protection. However, broader claims are more difficult to get granted and easier to invalidate. The claim scope must be anchored to the embodiments described in the specification to avoid invalidation grounds such as the abstract idea exception and failure to meet the written description requirement[3].

Factors Influencing Claim Scope

The right claim scope depends on several factors:

  • Actual Invention: The nature and complexity of the invention.
  • Prior Art: The level of existing technology in the field.
  • Client’s Budget: The financial resources available for patent prosecution and maintenance.
  • Technical Field: The specific industry and its patent landscape[3].

Reading and Interpreting Patent Claims

To effectively read and interpret patent claims, one must understand the structure and purpose of each claim.

Example from U.S. Patent 5,057,616

If we consider U.S. Patent 5,057,616, we would look at the independent claims first to understand the broadest scope of protection. Then, we would analyze the dependent claims to see how they further limit the independent claims.

Tools and Resources for Patent Search and Analysis

Several tools and resources are available to help navigate the patent landscape.

USPTO Patent Public Search

The USPTO's Patent Public Search tool provides enhanced access to prior art and allows users to search through issued and pending patents using modern interfaces[1].

Global Dossier

The Global Dossier service offers access to file histories of related applications from participating IP Offices, including the IP5 Offices. This helps in identifying patent families and accessing citation data[1].

Patent and Trademark Resource Centers (PTRCs)

Local PTRCs provide training in patent search techniques and maintain local search resources, which can be invaluable for inventors and businesses[1].

ClearstoneIP

ClearstoneIP offers AI-powered solutions for patent clearance and freedom-to-operate (FTO) analysis, streamlining the process and reducing time-to-market for new products[4].

Patent Landscape and Competitive Analysis

Understanding the broader patent landscape is crucial for strategic decision-making.

Identifying Prior Art

Using tools like the USPTO's Patent Public Search and Global Dossier, one can identify prior art and understand how it relates to the claims of U.S. Patent 5,057,616. This helps in assessing the novelty and non-obviousness of the invention[1].

Competitive Monitoring

Tools like ClearstoneIP enable competitive monitoring, allowing businesses to track competitors' patent activities and adjust their strategies accordingly[4].

Legal Considerations and Potential Reforms

The legal landscape surrounding patents is constantly evolving.

Small Claims Patent Court

There have been discussions and studies on the feasibility of a small claims patent court, which could provide a more accessible and cost-effective way for small inventors and businesses to resolve patent disputes[5].

Key Takeaways

  • Understanding Patent Structure: The cover page, specification, and claims are critical components of a US patent.
  • Claim Scope: Balancing breadth and specificity is key to ensuring the validity and enforceability of patent claims.
  • Tools and Resources: Utilize USPTO tools, Global Dossier, PTRCs, and AI-powered solutions like ClearstoneIP for comprehensive patent analysis.
  • Legal Considerations: Stay updated on legal reforms and potential changes in the patent system.

FAQs

What is the importance of the claims section in a US patent?

The claims section defines the scope of the invention and what is legally protected, making it the most critical part of the patent.

How do I determine the right claim scope for my patent application?

The right claim scope depends on factors such as the actual invention, prior art, client’s budget, and the technical field.

What tools are available for searching and analyzing patents?

Tools include the USPTO's Patent Public Search, Global Dossier, PTRCs, and AI-powered solutions like ClearstoneIP.

Why is it important to identify prior art when analyzing a patent?

Identifying prior art helps in assessing the novelty and non-obviousness of the invention and in drafting claims that are more likely to be granted.

What is the potential impact of a small claims patent court on patent disputes?

A small claims patent court could provide a more accessible and cost-effective way for small inventors and businesses to resolve patent disputes.

Sources

  1. USPTO: Search for patents - USPTO. Retrieved from https://www.uspto.gov/patents/search
  2. The Lens: How To Read a Patent. Retrieved from https://support.lens.org/knowledge-base/how-to-read-a-patent/
  3. Rimon Law: The Importance of Getting the Claim Scope Right in a US Patent Application. Retrieved from https://www.rimonlaw.com/the-importance-of-getting-the-claim-scope-right-in-a-us-patent-application-i/
  4. ClearstoneIP: Patent Risk Management & Analysis Solutions. Retrieved from https://www.clearstoneip.com
  5. ACUS: U.S. Patent Small Claims Court. Retrieved from https://www.acus.gov/research-projects/us-patent-small-claims-court

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Drugs Protected by US Patent 5,057,616

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

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