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Last Updated: January 3, 2025

Details for Patent: 5,364,938


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Summary for Patent: 5,364,938
Title: Triazole antifungal agents
Abstract:The invention provides antifungal agents of the formula: ##STR1## and their pharmaceutically acceptable salts, wherein R is phenyl optionally substituted by 1 to 3 substituents each independently selected from halo and CF.sub.3 ; R.sup.1 is C.sub.1 -C.sub.4 alkyl; R.sup.2 is H or C.sub.1 -C.sub.4 alkyl; and "Het", which is attached to the adjacent carbon atom by a ring carbon atom, is selected from pyridinyl, pyridazinyl, pyrimidinyl, pyrazinyl and triazinyl, "Het" being optionally substituted by C.sub.1 -C.sub.4 alkyl, C.sub.1 -C.sub.4 alkoxy, halo, CF.sub.3, CN, NO.sub.2, NH.sub.2, --NH(C.sub.1 -C.sub.4 alkanoyl) or --NHCO.sub.2 (C.sub.1 -C.sub.4 alkyl).
Inventor(s): Dickinson; Roger P. (Dover, GB2), Richardson; Kenneth (Birchington, GB2)
Assignee: Pfizer Inc. (New York, NY)
Application Number:08/026,671
Patent Claim Types:
see list of patent claims
Compound;
Patent landscape, scope, and claims:

Understanding the Scope and Claims of a U.S. Patent: A Detailed Analysis of United States Patent 5,364,938

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 5,364,938, using it as a case study to illustrate key concepts and best practices in patent law.

What is a Patent?

A patent is a form of intellectual property that grants the owner the exclusive right to make, use, sell, and distribute an invention for a specified period, typically 20 years from the filing date. The U.S. Patent and Trademark Office (USPTO) is responsible for granting U.S. patents and registering trademarks[2].

The Importance of Claim Scope

The claim scope in a patent application is critical. It defines the boundaries of what is protected by the patent. A common misconception is that broader claims are always better, but this is not the case. Broader claims can be more difficult to get granted and are easier to invalidate. The claim scope must be anchored to the embodiments disclosed in the specification to avoid invalidation grounds such as the abstract idea exception and failure to meet the written description requirement[3].

Conducting a Preliminary Patent Search

Before filing a patent application, it is essential to conduct a thorough search to ensure the invention is novel and non-obvious. The USPTO provides several tools for this purpose, including the Patent Public Search tool, which replaced legacy search tools like PubEast and PubWest. This tool offers enhanced access to prior art and modern interfaces to improve the search process[1].

Understanding Patent Claims

Patent claims are the legal descriptions of the invention that define the scope of protection. They must be clear, concise, and supported by the specification. Here are some key aspects of patent claims:

Types of Claims

  • Independent Claims: These claims stand alone and define the invention without reference to other claims.
  • Dependent Claims: These claims refer back to an independent claim and further limit the scope of the invention.

Claim Structure

Claims typically follow a specific structure:

  • Preamble: Introduces the invention.
  • Transition Phrase: Connects the preamble to the body of the claim (e.g., "comprising," "consisting of").
  • Body of the Claim: Describes the elements of the invention.

Analyzing United States Patent 5,364,938

To illustrate these concepts, let's consider a hypothetical analysis of United States Patent 5,364,938, though the specific details of this patent are not provided here.

Identifying the Invention

The first step is to identify the core invention described in the patent. This involves reading the abstract, summary, and detailed description sections.

Reviewing the Claims

Next, review the claims to understand the scope of protection. Here, you would look at both independent and dependent claims to see how they define the invention and its various embodiments.

Evaluating Prior Art

Use tools like the Patent Public Search or Global Dossier to evaluate prior art cited in the patent and ensure that the claims are novel and non-obvious over existing inventions[1].

Assessing Claim Scope

Determine if the claim scope is appropriately broad or narrow. Overly broad claims may be at risk of invalidation, while overly narrow claims may not provide sufficient protection[3].

Tools for Patent Search and Analysis

Several tools are available to help in the patent search and analysis process:

Patent Public Search

This tool provides enhanced access to prior art and offers two modern interfaces to improve the search process[1].

Global Dossier

This service allows users to see the patent family for a specific application, including related applications filed at participating IP Offices, along with dossier, classification, and citation data[1].

Patent and Trademark Resource Centers (PTRCs)

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

International Patent Landscape

When assessing the patent landscape, it is crucial to consider international patents. Databases such as those provided by the European Patent Office (EPO), Japan Patent Office (JPO), and World Intellectual Property Organization (WIPO) offer access to international patent collections[1].

Legal and Policy Considerations

The legal and policy environment surrounding patents is constantly evolving. For example, discussions around the establishment of a small claims patent court highlight the need for accessible and efficient dispute resolution mechanisms in patent law[5].

Key Takeaways

  • Claim Scope: The claim scope must be carefully balanced to ensure it is neither too broad nor too narrow.
  • Prior Art: Thoroughly search prior art to ensure the invention is novel and non-obvious.
  • Tools and Resources: Utilize tools like Patent Public Search, Global Dossier, and PTRCs to aid in the patent search and analysis process.
  • International Considerations: Consider the global patent landscape when evaluating the scope and claims of a patent.
  • Legal and Policy: Stay updated on legal and policy changes that could impact patent law and practice.

FAQs

What is the purpose of conducting a preliminary patent search?

Conducting a preliminary patent search helps ensure that the invention is novel and non-obvious, reducing the risk of patent application rejection or invalidation.

Why is the claim scope important in a patent application?

The claim scope defines the boundaries of what is protected by the patent. It must be balanced to avoid being too broad, which can lead to invalidation, or too narrow, which may not provide sufficient protection.

What tools are available for searching prior art?

Tools such as the Patent Public Search, Global Dossier, and databases from international intellectual property offices like the EPO and WIPO are available for searching prior art.

How do I determine if a patent claim is overly broad?

A claim is overly broad if it does not have sufficient support in the specification or if it encompasses abstract ideas or obvious variations of existing inventions.

What is the significance of the Global Dossier in patent searching?

The Global Dossier provides access to the file histories of related applications from participating IP Offices, allowing users to see the patent family for a specific application and related citation data.

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Drugs Protected by US Patent 5,364,938

ApplicantTradenameGeneric NameDosageNDAApproval DateTETypeRLDRSPatent No.Patent ExpirationProductSubstanceDelist Req.Patented / Exclusive UseSubmissiondate
No data available in table
>Applicant>Tradename>Generic Name>Dosage>NDA>Approval Date>TE>Type>RLD>RS>Patent No.>Patent Expiration>Product>Substance>Delist Req.>Patented / Exclusive Use>Submissiondate
Showing 0 to 0 of 0 entries

Foreign Priority and PCT Information for Patent: 5,364,938

Foriegn Application Priority Data
Foreign Country Foreign Patent Number Foreign Patent Date
United Kingdom8819308Aug 13, 1988

International Family Members for US Patent 5,364,938

CountryPatent NumberEstimated ExpirationSupplementary Protection CertificateSPC CountrySPC Expiration
African Regional IP Organization (ARIPO) 104 ⤷  Subscribe
African Regional IP Organization (ARIPO) 8900135 ⤷  Subscribe
Argentina 246963 ⤷  Subscribe
>Country>Patent Number>Estimated Expiration>Supplementary Protection Certificate>SPC Country>SPC Expiration
Showing 1 to 3 of 3 entries

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