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Last Updated: December 22, 2024

Details for Patent: 6,159,458


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Summary for Patent: 6,159,458
Title: Sustained release ophthalmic compositions containing water soluble medicaments
Abstract:An ophthalmic composition that provides sustained release of a water soluble medicament is formed comprising a crosslinked carboxy-containing polymer, a medicament, a sugar and water. The composition has a pH of at least 6.7 but a viscosity of from about 1000 to 5000 cps.
Inventor(s): Bowman; Lyle M. (Pleasanton, CA), Pfeiffer; James F. (Oakland, CA)
Assignee: InSite Vision (Alameda, CA)
Application Number:08/963,815
Patent Claim Types:
see list of patent claims
Composition; Use;
Patent landscape, scope, and claims:

Understanding the Scope and Claims of United States Patent 6,159,458: A Comprehensive Analysis

Introduction

Patent analysis is a crucial step in understanding the intellectual property landscape, especially when it comes to specific patents like United States Patent 6,159,458. This patent, though not explicitly detailed in the provided sources, can be analyzed using general principles of patent analysis. Here, we will delve into the key aspects of patent scope, claims, and the broader patent landscape, using relevant tools and methodologies.

Patent Search and Analysis Tools

To begin analyzing a patent, one must first locate and access the patent documentation. The United States Patent and Trademark Office (USPTO) provides several tools for this purpose:

Patent Public Search

The Patent Public Search tool is a modern interface that replaces legacy tools like PubEast and PubWest. It offers enhanced access to prior art and flexible search capabilities, making it easier to find and analyze patents[1].

Global Dossier

This service allows users to view the file histories of related applications from participating IP Offices, including the IP5 Offices. It provides a comprehensive view of the patent family, classification, and citation data[1].

Patent and Trademark Resource Centers (PTRCs)

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

Determining Patent Scope

The scope of a patent is defined by its claims, which are the legal boundaries of what the patent protects.

Claims Analysis

Claims are the heart of a patent, and their analysis is critical. The Patent Claims Research Dataset by the USPTO provides detailed information on claims from U.S. patents and applications, including claim-level statistics and document-level statistics. This dataset can help in understanding the dependency relationships between claims and the overall scope of the patent[3].

Claim Types

Patents typically include various types of claims, such as independent and dependent claims. Independent claims define the broadest scope of the invention, while dependent claims narrow down the scope by adding additional limitations[3].

Understanding the Claims of U.S. Patent 6,159,458

To analyze the specific claims of U.S. Patent 6,159,458, one would need to access the patent document through the USPTO's Patent Public Search tool or other patent databases.

Step-by-Step Analysis

  1. Identify the Patent: Search for the patent number in the Patent Public Search tool.
  2. Review the Claims: Carefully read through the independent and dependent claims to understand the scope of the invention.
  3. Analyze Dependencies: Use tools like the Patent Claims Research Dataset to understand the dependency relationships between claims.
  4. Examine Prior Art: Use the Global Dossier and other tools to see how the patent relates to prior art and other patents in the same family[1][3].

Importance of Inventorship

Correctly determining the inventors of a patent is crucial for its validity. U.S. patent law requires that only the true and only inventors be listed on the patent application. Errors in inventorship, especially those made with deceptive intent, can render the patent unenforceable[2].

Patent Landscape and Prior Art

Understanding the broader patent landscape involves looking at prior art and related patents.

Common Citation Document (CCD)

The CCD application consolidates citation data from participating IP Offices, allowing users to see the prior art cited by multiple offices for the same invention. This helps in visualizing the global patent landscape related to the patent in question[1].

Global Dossier

This service provides access to the file histories of related applications, helping to identify the patent family and understand how the patent fits into the global intellectual property ecosystem[1].

Legal and Policy Considerations

The legal and policy framework surrounding patents is complex and evolving.

Small Claims Patent Court

There have been discussions and studies on the feasibility of a small claims patent court, which could impact how patent disputes are handled. This includes considerations on the structure, legal implications, and practical aspects of such a court[5].

Practical Applications and Implications

Understanding the scope and claims of a patent has significant practical implications.

Licensing and Collaboration

Accurate analysis of patent claims is essential for licensing agreements and collaborations. It helps in identifying potential infringement issues and ensuring that all parties are aware of the boundaries of the patent[3].

Litigation

In patent litigation, the claims are often the focal point of disputes. A thorough analysis can help in preparing strong legal arguments and understanding the potential outcomes of litigation[2].

Key Takeaways

  • Patent Search Tools: Utilize tools like Patent Public Search, Global Dossier, and PTRCs for comprehensive patent analysis.
  • Claims Analysis: Focus on independent and dependent claims to understand the patent's scope.
  • Inventorship: Ensure correct inventorship to maintain the patent's validity.
  • Prior Art: Analyze prior art using CCD and Global Dossier to understand the patent's place in the global landscape.
  • Legal Considerations: Stay updated on legal and policy developments, such as the potential for a small claims patent court.

FAQs

Q: How do I find and analyze a specific U.S. patent?

A: Use the USPTO's Patent Public Search tool or visit a Patent and Trademark Resource Center for assistance.

Q: What is the importance of correct inventorship in a patent?

A: Correct inventorship is crucial for the patent's validity; errors, especially those made with deceptive intent, can render the patent unenforceable.

Q: How do I understand the dependency relationships between patent claims?

A: Use the Patent Claims Research Dataset provided by the USPTO to analyze claim-level statistics and dependency relationships.

Q: What is the Common Citation Document (CCD), and how is it useful?

A: The CCD consolidates citation data from participating IP Offices, helping to visualize the prior art cited by multiple offices for the same invention.

Q: Why is understanding the patent landscape important?

A: It helps in identifying related patents, prior art, and potential infringement issues, which are critical for licensing, collaboration, and litigation.

Sources

  1. USPTO - Search for patents: https://www.uspto.gov/patents/search
  2. Determining Inventorship for US Patent Applications: https://agsci.oregonstate.edu/sites/agsci/files/main/research/vrc_release_inventorship-gattari.pdf
  3. Patent Claims Research Dataset - USPTO: https://www.uspto.gov/ip-policy/economic-research/research-datasets/patent-claims-research-dataset
  4. EP2994109A1 - Aqueous ophthalmic formulations ... - Google Patents: https://patents.google.com/patent/EP2994109A1/en
  5. U.S. Patent Small Claims Court - ACUS: https://www.acus.gov/research-projects/us-patent-small-claims-court

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Drugs Protected by US Patent 6,159,458

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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