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Last Updated: March 31, 2025

Details for Patent: 4,189,469


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Summary for Patent: 4,189,469
Title: Pharmaceutical compositions
Abstract:A pharmaceutical composition for oral administration in dosage unit form which comprises at least one xanthine derivative selected from the group consisting of (a) (.omega.-1(-hydroxyalkyl-dialkylxanthines wherein the (.omega.-1)-hydroxyalkyl group contains 5 or 6 carbon atoms and is in the 1- or 7-position, the alkyl group in the other of the 1- and 7-position contains from 1 to 12 carbon atoms and the alkyl group in the 3-position contains from 1 to 4 carbon atoms, (b) (.omega.-1)-oxoalkyl-dimethylxanthines wherein the (.omega.-1)-oxoalkyl group contains 5 or 6 carbon atoms and is in the 1- or 7-position, (c) dimethylxanthine derivatives having an additional alkyl group containing from 4 to 12 carbon atoms in the 1- or 7-position, and (d) dimethylxanthine derivatives having an additional benzyl group in the 1- or 7-position and a saliva forming agent, each dosage unit containing at least 300 mg of xanthine derivative, and the weight ratio of xanthine derivative to saliva forming agent being in the range from 1:2 to 10:1 and a method for the preparation of said composition.
Inventor(s): Gleixner; Klaus (Taunusstein-Wehen, DE), Muller; Roland (Wiesbaden, DE), Lehrach; Franz (Wiesbaden, DE)
Assignee: Hoechst Aktiengesellschaft (Frankfurt, DE)
Application Number:05/683,795
Patent Claim Types:
see list of patent claims
Composition; Dosage form; Process;
Patent landscape, scope, and claims:

Analyzing the Scope and Claims of United States Patent 4,189,469: A Detailed Examination

Introduction

United States Patent 4,189,469, titled "Pharmaceutical compositions," is a significant patent in the pharmaceutical industry. To understand its impact and the landscape it operates within, it is crucial to delve into its scope, claims, and the broader patent landscape.

Patent Overview

Title and Abstract

The patent, granted on February 19, 1980, pertains to pharmaceutical compositions, specifically focusing on the formulation and delivery of certain active pharmaceutical ingredients. The abstract outlines the invention's purpose, highlighting the development of stable and effective pharmaceutical formulations.

Claims Analysis

Independent and Dependent Claims

The patent includes a series of claims that define the scope of the invention. Independent claims typically outline the broadest aspects of the invention, while dependent claims narrow down the scope by adding specific details or limitations.

  • Independent Claims: These claims define the core elements of the pharmaceutical compositions, including the active ingredients, excipients, and the formulation process.
  • Dependent Claims: These claims build upon the independent claims by specifying particular ratios of ingredients, methods of preparation, and physical characteristics of the final product.

Claim Construction

Claim construction is critical in understanding the patent's scope. It involves interpreting the language of the claims to determine what is covered by the patent. For US Patent 4,189,469, the claims must be analyzed in the context of the specification and the prosecution history to ensure accurate interpretation[4].

Scope of the Invention

Active Ingredients and Formulations

The patent details specific active pharmaceutical ingredients and their formulations. This includes the types of excipients used, the methods of combining these ingredients, and the resulting pharmaceutical products. The scope is limited to these specific formulations and their applications.

Exclusivity and Novelty

The patent's scope is defined by its novelty and non-obviousness over prior art. The invention must be significantly different from existing formulations and must not be obvious to a person of ordinary skill in the relevant field. This ensures that the patent covers unique and innovative pharmaceutical compositions[4].

Patent Landscape

Technology Field

The patent falls under the "Drugs and Medical" technology field, one of the broad categories used by the USPTO to classify patents. This field is highly competitive, with numerous patents and ongoing research in pharmaceutical formulations and delivery systems[1].

Allowance Rates

Patents in the "Drugs and Medical" field have varying allowance rates. According to USPTO data, the allowance rates for this field can be lower compared to other technology fields due to the stringent requirements for safety, efficacy, and novelty[1].

Continuation Procedures

The patent landscape is also influenced by continuation procedures. These procedures allow applicants to file subsequent applications related to the original (progenitor) application, potentially leading to multiple patents from a single initial filing. This can complicate the calculation of allowance rates but is a common strategy in the pharmaceutical industry to protect various aspects of an invention[1].

Prosecution History

Examination Process

The prosecution history of US Patent 4,189,469 includes the interactions between the applicant and the USPTO during the examination process. This history can provide insights into the challenges faced, the arguments made by the applicant, and any amendments or clarifications that were necessary to secure the patent[4].

Office Actions and Responses

Office actions and the applicant's responses are crucial in understanding the scope and claims of the patent. These documents can reveal the specific issues raised by the examiner and how they were addressed, which can be invaluable for interpreting the patent's claims and scope.

Global Dossier and International Implications

Global Patent System

The Global Dossier system allows users to access the file histories of related applications from participating IP Offices. This can be particularly useful for understanding the international implications of US Patent 4,189,469, including any corresponding patents or applications in other countries[4].

Common Citation Document (CCD)

The CCD application consolidates prior art cited by all participating offices for the family members of a patent application. This tool can help in assessing the global patent landscape and identifying potential overlaps or conflicts with other patents[4].

Litigation and Infringement

Administrative Claims

In the event of alleged infringement, the process for filing an administrative claim involves detailed documentation, including allegations of infringement, requests for compensation, and identification of the infringing item or process. This is particularly relevant for patents like US 4,189,469, which may be used in various commercial and military applications[2].

Evidence and Documentation

For any litigation or infringement claims related to US Patent 4,189,469, it is essential to gather comprehensive evidence, including documentation of the patent's file history, prior art, and any relevant licenses or agreements. This ensures that all parties can accurately assess the patent's validity and scope[2].

Key Takeaways

  • Scope and Claims: The patent's scope is defined by its claims, which outline the specific pharmaceutical compositions and their formulations.
  • Patent Landscape: The patent operates within the competitive "Drugs and Medical" technology field, with considerations for allowance rates, continuation procedures, and global implications.
  • Prosecution History: Understanding the examination process and office actions is crucial for interpreting the patent's claims and scope.
  • International Implications: Tools like the Global Dossier and CCD help in assessing the patent's global standing.
  • Litigation and Infringement: Detailed documentation is necessary for any administrative claims or litigation related to the patent.

FAQs

What is the main focus of US Patent 4,189,469?

The main focus of US Patent 4,189,469 is on the development of stable and effective pharmaceutical compositions, including specific formulations and delivery systems.

How are the claims of the patent constructed?

The claims are constructed through a combination of independent and dependent claims, with independent claims defining the broadest aspects of the invention and dependent claims adding specific details.

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

The Global Dossier allows users to access the file histories of related applications from participating IP Offices, providing a comprehensive view of the patent's international standing.

What are the key elements required for filing an administrative claim for patent infringement?

Key elements include an allegation of infringement, a request for compensation, citation of the patent, identification of the infringing item or process, and detailed documentation to support the claim.

How does the allowance rate affect the patent landscape for pharmaceutical patents?

The allowance rate can be lower for pharmaceutical patents due to stringent safety, efficacy, and novelty requirements, which influences the competitive landscape and the strategies employed by applicants.

Sources

  1. Carley, M., & Hegde, D. (n.d.). What Is the Probability of Receiving a US Patent? Yale Journal of Law & Technology.
  2. Acquisition.gov. (n.d.). Requirements for filing an administrative claim for patent infringement. DFARS 227.7004.
  3. USPTO. (2017, August 28). Patent Claims Research Dataset. USPTO Economic Research.
  4. USPTO. (2018, October 18). Search for patents. USPTO.

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Drugs Protected by US Patent 4,189,469

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: 4,189,469

Foriegn Application Priority Data
Foreign Country Foreign Patent Number Foreign Patent Date
Germany2520978May 10, 1975

International Family Members for US Patent 4,189,469

CountryPatent NumberEstimated ExpirationSupplementary Protection CertificateSPC CountrySPC Expiration
Australia 1376576 ⤷  Try for Free
Australia 502644 ⤷  Try for Free
Belgium 841617 ⤷  Try for Free
>Country>Patent Number>Estimated Expiration>Supplementary Protection Certificate>SPC Country>SPC Expiration
Showing 1 to 3 of 3 entries

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