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Last Updated: April 11, 2025

Details for Patent: RE33994


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Summary for Patent: RE33994
Title: Pharmaceutical delivery system
Abstract:A composition for use in an aqueous environment which .[.comprise.]. .Iadd.comprises .Iaddend.a formulation containing a water-soluble pharmaceutically beneficial agent, a water-insoluble, water-permeable film coating surrounding the formulation, and particulate, water-soluble, pore-forming material dispersed within the film coating. The questions raised in reexamination request No. 90/001,344, filed Oct. 5, 1987, have been considered and the results thereof are reflected in this reissue patent which constitutes the reexamination certificate required by 35 U.S.C. 307 as provided in 37 CFR 1.570(e).
Inventor(s): Baker; Richard W. (Palo Alto, CA), Brooke; James W. (Sisters, OR)
Assignee: Burroughs Wellcome Co. (Research Triangle Park, NC)
Application Number:07/390,518
Patent Claim Types:
see list of patent claims
Composition; Dosage form;
Patent landscape, scope, and claims:

Analyzing the Scope and Claims of United States Patent RE33994: A Comprehensive Guide

Introduction

Understanding the scope and claims of a patent is crucial for navigating the complex landscape of intellectual property. This article will delve into the details of United States Patent RE33994, exploring its claims, the patent landscape, and the implications for patent holders and competitors.

What is United States Patent RE33994?

United States Patent RE33994, though not directly provided in the sources, can be analyzed through the lens of general patent analysis principles. Here, we will use analogous examples and general guidelines to illustrate how to conduct such an analysis.

Understanding Patent Claims

Importance of Claims

Patent claims are the most critical part of any patent application. They define the scope of the invention and determine what is protected by the patent[5].

Types of Claims

Patent claims can be independent or dependent. Independent claims stand alone and define the invention without reference to other claims. Dependent claims, on the other hand, refer back to an independent claim and further limit the invention[3].

Claim Analysis

To analyze the claims of a patent like RE33994, one must carefully read and interpret each claim. Here are some steps:

Identify Independent Claims

Independent claims are the foundation of the patent. They broadly define the invention and set the stage for the dependent claims.

Analyze Dependent Claims

Dependent claims narrow down the invention by adding specific limitations. These claims can provide additional protection by covering various aspects of the invention.

Determine Claim Scope

The scope of the claims is crucial for understanding what is protected. This involves identifying the key elements and limitations of each claim. For example, if a claim includes a specific feature, any variation that does not include this feature may not be covered by the patent[5].

Patent Landscape Analysis

Claim Coverage Matrix

A Claim Coverage Matrix is a tool used to categorize patents by their claims and scope concepts. This matrix helps in identifying which patents and claims are actively protecting the intellectual property and where gaps or opportunities exist[5].

Categorization by Scope Concepts

Scope concepts link claims on similar patents, providing a powerful categorization tool. This approach allows for the efficient analysis of large numbers of patent claims concurrently.

Claim Charts

Claim charts generated by software like ClaimScape® can be used to review patent coverage. These charts help technical experts determine whether a particular scope concept is applicable to a target product or method, highlighting gaps in current coverage and future design opportunities[5].

Legal Considerations

Original Patent Requirement

When analyzing reissue patents, it is essential to ensure that the reissue claims meet the original patent requirement under 35 U.S.C. § 251. This means the reissue claims must be directed to the invention disclosed in the original patent[2].

Obviousness-Type Double Patenting (ODP)

ODP is a critical legal consideration that 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 a grant of Patent Term Adjustment (PTA)[1].

Economic and Strategic Implications

Patent Scope Measurements

The USPTO's Patent Claims Research Dataset provides detailed information on claims from U.S. patents, including measures of patent scope. This data can be used to analyze the economic and strategic implications of a patent's claims, such as the breadth of protection and potential future directions[3].

Value Assessment

Patent claims can be assessed for their value to the company. High-value claims are those that protect core technologies, medium-value claims indicate potential future directions, and low-value claims may not be worth maintaining[5].

Case Studies and Analogies

In Re Cellect

The case of In Re Cellect highlights the importance of ODP analysis. Here, the court upheld the Board's decision that the claims were unpatentable due to ODP, emphasizing that a grant of PTA does not extend the term of a patent past the date of a terminal disclaimer[1].

In Re FLOAT'N'GRILL LLC

This case illustrates the strict adherence to the original patent requirement. The court affirmed the rejection of reissue claims that did not meet the original patent requirement, underscoring the importance of ensuring that reissue claims are directed to the invention disclosed in the original patent[2].

Key Takeaways

  • Claims Analysis: Carefully interpret independent and dependent claims to understand the scope of the patent.
  • Patent Landscape: Use tools like Claim Coverage Matrix and Claim Charts to analyze the patent landscape and identify gaps or opportunities.
  • Legal Considerations: Ensure compliance with legal requirements such as the original patent requirement and ODP analysis.
  • Economic Implications: Assess the value of patent claims to the company and use data from sources like the USPTO's Patent Claims Research Dataset.
  • Strategic Planning: Use patent analytics to guide future design options and identify potential future directions.

FAQs

What is the importance of independent claims in a patent?

Independent claims are crucial as they broadly define the invention and set the stage for the dependent claims, determining the overall scope of the patent.

How does ODP affect patent validity?

ODP 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 a grant of PTA.

What is the purpose of a Claim Coverage Matrix?

A Claim Coverage Matrix helps in identifying which patents and claims are actively protecting the intellectual property and where gaps or opportunities exist by categorizing patents by their claims and scope concepts.

Why is the original patent requirement important in reissue patents?

The original patent requirement ensures that reissue claims are directed to the invention disclosed in the original patent, preventing the broadening of claims to cover undisclosed alternatives.

How can patent analytics help in strategic planning?

Patent analytics can help in identifying gaps in current coverage, highlighting future design opportunities, and assessing the value of patent claims to the company, guiding strategic decisions and future development directions.

Sources

  1. In re Cellect - United States Court of Appeals for the Federal Circuit[1]
  2. In Re FLOAT'N'GRILL LLC - Court of Appeals for the Federal Circuit[2]
  3. Patent Claims Research Dataset - USPTO[3]
  4. Patent Analytics - Schwegman, Lundberg & Woessner, P.A.[5]

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Drugs Protected by US Patent RE33994

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: RE33994

Foriegn Application Priority Data
Foreign Country Foreign Patent Number Foreign Patent Date
United Kingdom8322007Aug 16, 1983

International Family Members for US Patent RE33994

CountryPatent NumberEstimated ExpirationSupplementary Protection CertificateSPC CountrySPC Expiration
Canada 1239034 ⤷  Try for Free
Canada 1321754 ⤷  Try for Free
European Patent Office 0467488 ⤷  Try for Free SPC/GB00/019 United Kingdom ⤷  Try for Free
European Patent Office 0467488 ⤷  Try for Free 2000C/021 Belgium ⤷  Try for Free
Germany 10075031 ⤷  Try for Free
>Country>Patent Number>Estimated Expiration>Supplementary Protection Certificate>SPC Country>SPC Expiration
Showing 1 to 5 of 5 entries

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