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Last Updated: December 21, 2024

Details for Patent: 4,138,475


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Summary for Patent: 4,138,475
Title: Sustained release pharmaceutical composition
Abstract:Sustained release pharmaceutical composition consisting of a hard gelatine capsule containing film coated spheroids, the spheroids comprising propranolol, or a pharmaceutically-acceptable salt thereof, in admixture with non-water-swellable microcrystalline cellulose, and the said spheroids having a film coat comprising ethylcellulose optionally together with hydroxypropyl methylcellulose and/or a plasticizer.
Inventor(s): McAinsh; James (Macclesfield, GB2), Rowe; Raymond C. (Macclesfield, GB2)
Assignee: Imperial Chemical Industries Limited (London, GB2)
Application Number:05/833,339
Patent Claim Types:
see list of patent claims
Composition; Compound; Dosage form;
Patent landscape, scope, and claims:

Analyzing the Scope and Claims of United States Patent 4,138,475: A Comprehensive Guide

Introduction to Patent Analysis

When analyzing a patent, it is crucial to understand both the scope and claims of the patent, as well as the broader patent landscape in which it resides. This article will delve into the specifics of United States Patent 4,138,475, and provide a detailed analysis of its scope, claims, and the surrounding patent landscape.

Understanding the Patent: United States Patent 4,138,475

Patent Overview

United States Patent 4,138,475, though not specified in the provided sources, typically involves a detailed description of an invention, its background, and the specific claims that define the invention's scope. To analyze this patent, one would need to review the patent document itself, focusing on the abstract, description, and claims sections.

Abstract and Description

The abstract provides a brief summary of the invention, while the description section elaborates on the invention's details, including its components, functionality, and any specific embodiments. This information is essential for understanding the core of the invention.

Claims

The claims section is the most critical part of a patent, as it defines the legal boundaries of the invention. Claims are statements that describe the invention in a way that distinguishes it from prior art. There are two types of claims: independent claims, which stand alone, and dependent claims, which refer back to an independent claim.

Scope of the Patent

Claim Construction

To determine the scope of the patent, one must interpret the claims. This involves understanding the terminology used, the relationships between different claim elements, and any limitations or exceptions. Claim construction is a legal process that can be complex and often requires the expertise of a patent attorney.

Prior Art and Novelty

The scope of the patent is also influenced by prior art, which includes all publicly available information that existed before the patent's filing date. Ensuring that the patent is novel and non-obvious over prior art is crucial for its validity.

Patent Landscape Analysis

What is Patent Landscape Analysis?

Patent landscape analysis, also known as patent mapping, is a process that analyzes, organizes, and extracts value from vast amounts of patent data. This analysis helps in understanding the entire landscape of a technology domain and provides valuable insights into competitors, market trends, and potential licensing opportunities[3].

Identifying Competitors and Market Trends

By conducting a patent landscape analysis, you can identify key players in the same technological field as the patent in question. This includes understanding who is actively innovating, which patents are about to expire, and the overall activity level in the sector. This information can guide business strategies, R&D investments, and licensing decisions.

Legal Status and Expiry Dates

A thorough patent landscape analysis includes details on the legal status of patents (alive, pending, lapsed, revoked, or expired) and their expected expiry dates. This information is vital for planning future innovations and potential licensing agreements[3].

Tools and Resources for Patent Search

USPTO Resources

The United States Patent and Trademark Office (USPTO) provides several tools for conducting patent searches, including the Patent Public Search tool, which replaced legacy tools like PubEast and PubWest. The Global Dossier service allows access to file histories of related applications from participating IP Offices, and the Patent and Trademark Resource Centers (PTRCs) offer local search resources and training[1].

International Patent Offices

To understand the global patent landscape, it is essential to search databases from other international intellectual property offices. Resources like the European Patent Office (EPO), Japan Patent Office (JPO), and the World Intellectual Property Organization (WIPO) provide access to international patent databases and machine translations of patents[1].

Conducting a Preliminary Patent Search

Step-by-Step Strategy

Conducting a preliminary patent search involves several steps, including defining a search strategy, identifying relevant patent and non-patent sources, and collaborating with technical and market experts to establish a collection of relevant keywords and patent class codes. This process helps in gathering all relevant data from sources like the USPTO, WIPO, and EPO databases[3].

Advanced Patent Landscape Reports

Insights and Visualizations

Advanced patent landscape reports provide detailed insights into patent trends, market developments such as mergers and acquisitions, in/out-licensing, litigation, and opposition activities. These reports are often visualized in charts and graphs to help derive critical insights and minimize business risks[3].

Case Study: Analyzing the Patent Landscape for a Specific Technology

Example: Technology Domain Analysis

For instance, if the patent in question pertains to a specific technology domain like telecommunications or biotechnology, the patent landscape analysis would involve identifying all relevant patents in that domain. This includes analyzing the patent portfolios of key players, identifying gaps in the market, and understanding the legal status and expiry dates of relevant patents.

Identifying Licensing Opportunities

The analysis can also reveal potential licensing opportunities by identifying patents that are about to expire or have not been updated. This information can be used to develop new licensing strategies and enhance current products.

Key Takeaways

  • Understand the Patent Document: The abstract, description, and claims sections are crucial for understanding the invention.
  • Claim Construction: Interpreting claims is essential for determining the patent's scope.
  • Prior Art: Ensuring novelty and non-obviousness over prior art is vital.
  • Patent Landscape Analysis: This helps in understanding competitors, market trends, and licensing opportunities.
  • Use of Tools and Resources: Utilize USPTO resources and international patent databases for comprehensive searches.
  • Advanced Reports: These provide detailed insights into patent trends and market developments.

FAQs

Q: What is the purpose of a patent landscape analysis?

A: Patent landscape analysis helps in understanding the entire landscape of a technology domain, identifying competitors, market trends, and potential licensing opportunities.

Q: How do I conduct a preliminary patent search?

A: Conducting a preliminary patent search involves defining a search strategy, identifying relevant sources, and collaborating with experts to gather all relevant data.

Q: What tools does the USPTO provide for patent searches?

A: The USPTO provides tools such as the Patent Public Search tool, Global Dossier service, and Patent and Trademark Resource Centers (PTRCs).

Q: Why is it important to analyze the legal status of patents?

A: Analyzing the legal status of patents helps in understanding their validity and expected expiry dates, which is crucial for business strategies and licensing decisions.

Q: How can advanced patent landscape reports benefit my business?

A: Advanced reports provide detailed insights into patent trends and market developments, helping to minimize business risks and capitalize on opportunities.

Sources

  1. USPTO - Search for patents: https://www.uspto.gov/patents/search
  2. PubChem - Patent US-2023345511-A1: https://pubchem.ncbi.nlm.nih.gov/patent/US-2023345511-A1
  3. Sagacious Research - Navigating Technological Domains with Patent Landscape Analysis: https://sagaciousresearch.com/blog/navigating-technological-domains-with-patent-landscape-analysis/
  4. U.S. Department of Commerce - U.S. Patent and Trademark Office: https://www.commerce.gov/bureaus-and-offices/uspto
  5. Google APIs - United States Patent (19): https://patentimages.storage.googleapis.com/f1/a9/34/bde4b0e5b09957/US4994279.pdf

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Drugs Protected by US Patent 4,138,475

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

Foreign Priority and PCT Information for Patent: 4,138,475

Foriegn Application Priority Data
Foreign Country Foreign Patent Number Foreign Patent Date
United Kingdom23114/77Jun 1, 1977

International Family Members for US Patent 4,138,475

Country Patent Number Estimated Expiration Supplementary Protection Certificate SPC Country SPC Expiration
Australia 2861477 ⤷  Subscribe
Australia 510215 ⤷  Subscribe
Belgium 859288 ⤷  Subscribe
Canada 1100040 ⤷  Subscribe
Switzerland 638399 ⤷  Subscribe
Germany 2740286 ⤷  Subscribe
>Country >Patent Number >Estimated Expiration >Supplementary Protection Certificate >SPC Country >SPC Expiration

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