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Last Updated: January 3, 2025

Details for Patent: 4,642,346


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Summary for Patent: 4,642,346
Title: Anhydrous crystalline 9-(1,3-dihydroxy-2-propoxymethyl)guanine
Abstract:Novel anhydrous crystalline 9-(1,3-dihydroxy-2-propoxymethyl)guanine useful as an antiviral agent.
Inventor(s): Chan; Tai W. (Palo Alto, CA), Nguyen; Huong T. (Saratoga, CA)
Assignee: Syntex (U.S.A.) Inc. (Palo Alto, CA)
Application Number:06/747,631
Patent Claim Types:
see list of patent claims
Compound; Process;
Patent landscape, scope, and claims:

Analyzing the Scope and Claims of United States Patent 4,642,346

Introduction

Understanding the scope and claims of a patent is crucial for determining its validity, enforceability, and the protection it offers. This analysis will delve into the specifics of United States Patent 4,642,346, exploring its claims, scope, and the broader patent landscape it inhabits.

Patent Overview

United States Patent 4,642,346, though not explicitly detailed in the provided sources, can be analyzed using general principles of patent law and search tools available through the USPTO.

Claims Analysis

Claim Structure

Patent claims are the heart of any patent, defining the scope of protection. Claims in a patent like 4,642,346 would typically include:

  • Independent Claims: These claims stand alone and define the broadest scope of the invention.
  • Dependent Claims: These claims depend on one or more of the independent claims and narrow down the scope further[3].

Claim Interpretation

To analyze the claims of 4,642,346, one would need to interpret each claim in light of the specification and drawings. This involves understanding the terminology used, the relationships between different elements of the invention, and any limitations or exceptions mentioned.

Scope of the Patent

Technological Domain

The scope of the patent is determined by the technological domain it operates in. For example, if 4,642,346 pertains to a specific field like electronics or biotechnology, the scope would be limited to that domain.

Prior Art and Novelty

The patent's scope is also influenced by prior art, which includes all publicly available information before the patent's filing date. The claims must be novel and non-obvious over this prior art to be valid[4].

Patent Landscape

Related Patents and Applications

To understand the patent landscape, one must identify related patents and applications. This can be done using tools like the USPTO's Patent Public Search, Global Dossier, and Common Citation Document (CCD)[4].

Continuations and Family Members

If 4,642,346 is part of a patent family, analyzing its continuations and continuations-in-part is essential. These related patents can extend the scope of protection or introduce new claims that were not present in the original patent[1].

Obviousness-Type Double Patenting (ODP)

ODP Analysis

For patents that are part of the same family, an ODP analysis is crucial to ensure that the same invention is not patented multiple times. This analysis checks if the claims of one patent are obvious over the claims of another patent in the same family[1].

Patent Term and Adjustments

Patent Term Adjustment (PTA)

The patent term can be adjusted due to delays during prosecution. However, as seen in cases like In re Cellect, PTA does not extend the term past the date of a terminal disclaimer, which is often used to overcome ODP rejections[1].

Patent Analytics and Claim Coverage

Claim Coverage Matrix

Using tools like Claim Coverage Matrix and Claim Charts, one can categorize patents by claims and scope concepts. This helps in identifying which patents and claims are actively protecting the intellectual property and where gaps or opportunities exist[3].

International Considerations

Global Patent Search

To ensure the invention is not already patented abroad, searching international patent databases such as those provided by the European Patent Office (EPO), Japan Patent Office (JPO), and World Intellectual Property Organization (WIPO) is necessary[4].

Practical Implications

Enforcement and Licensing

Understanding the scope and claims of 4,642,346 is vital for enforcement and licensing purposes. It helps in identifying potential infringers and negotiating licensing agreements.

Designing Around the Patent

For competitors, analyzing the patent's scope and claims can help in designing around the patent, ensuring that their products or methods do not infringe on the protected invention.

Key Takeaways

  • Claims Interpretation: Accurately interpreting the claims is crucial for understanding the patent's scope.
  • Patent Landscape: Analyzing related patents and applications helps in understanding the broader patent landscape.
  • ODP Analysis: Ensuring that the patent does not fall under ODP is essential for maintaining its validity.
  • International Search: Searching global patent databases ensures that the invention is novel worldwide.
  • Patent Analytics: Using tools like Claim Coverage Matrix and Claim Charts aids in managing and optimizing patent portfolios.

FAQs

Q: How do I search for existing patents related to 4,642,346? A: You can use the USPTO's Patent Public Search tool, Global Dossier, and other international patent databases to search for related patents[4].

Q: What is the importance of ODP analysis in patent law? A: ODP analysis prevents an inventor from securing a second, later-expiring patent for an invention covered by a patent that was filed at the same time but has a different patent term due to PTA[1].

Q: How can I determine if my product infringes on 4,642,346? A: By analyzing the claims of 4,642,346 and comparing them with your product's features, you can determine if there is potential infringement. Using claim charts and consulting with patent attorneys can also be helpful[3].

Q: Can I use AI tools to analyze patent claims? A: Yes, AI tools can be used to assist in preparing and prosecuting patent applications, including analyzing claims. However, human oversight is still necessary to ensure accuracy and compliance with USPTO guidelines[5].

Q: How do I ensure my patent does not fall under obviousness-type double patenting? A: Conducting an ODP analysis and ensuring that the claims of one patent are not obvious over the claims of another patent in the same family can help prevent ODP issues[1].

Sources

  1. In re Cellect - United States Court of Appeals for the Federal Circuit
  2. U.S. Patent Small Claims Court - Administrative Conference of the United States
  3. Patent Analytics - Schwegman, Lundberg & Woessner, P.A.
  4. Search for Patents - United States Patent and Trademark Office
  5. Guidance on Use of Artificial Intelligence-Based Tools in Practice - Federal Register

More… ↓

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Drugs Protected by US Patent 4,642,346

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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