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Last Updated: March 26, 2026

Details for Patent: 6,103,219


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Summary for Patent: 6,103,219
Title:Pharmaceutical excipient having improved compressibility
Abstract:A microcrystalline cellulose-based excipient having improved compressibility, whether utilized in direct compression, dry granulation or wet granulation formulations, is disclosed. The excipient is an agglomerate of microcrystalline cellulose particles and from about 0.1% to about 20% silicon dioxide particles, by weight of the microcrystalline cellulose, wherein the microcrystalline cellulose and silicon dioxide are in intimate association with each other. The silicon dioxide utilized in the novel excipient has a particle size from about 1 nanometer to about 100 microns. Most preferably, the silicon dioxide is a grade of colloidal silicon dioxide.
Inventor(s):Bob E. Sherwood, John H. Staniforth, Edward A. Hunter
Assignee:J Rettenmaier and Soehne GmbH and Co KG
Application Number:US08/992,073
Patent Claim Types:
see list of patent claims
Composition; Compound; Use; Formulation; Process; Dosage form;
Patent landscape, scope, and claims:

Analysis of the Scope, Claims, and Patent Landscape of U.S. Patent 6,103,219

Summary

United States Patent 6,103,219 (hereafter "the '219 patent"), granted on August 15, 2000, pertains to a specific pharmaceutical composition or process. This patent claims innovative aspects that contribute to the development of therapeutic agents, likely in the domain of an active pharmaceutical ingredient (API), formulation, or manufacturing process. Its scope is defined by the specific claims, which delineate the proprietary rights over the invention. The patent landscape surrounding the '219 patent reflects broader innovation trends in its respective therapeutic class or technological area, involving key competitors, licensing activities, and potential patent expirations.

This analysis explores the patent's claims and scope, contextualizes it within the broader patent landscape, and assesses strategic implications for stakeholders.


What is the Scope of U.S. Patent 6,103,219?

Overview of Patent Claims

The core of a patent’s legal right resides in its claims, which explicitly define the protection conferred. The '219 patent contains a series of independent and dependent claims, likely including:

  • Independent Claims: Cover broad aspects of the composition, method, or process.
  • Dependent Claims: Narrow down specific embodiments, variations, or improvements.

Typical Claim Elements (Hypothetical Example)

Claim Type Elements Description
Independent Composition comprising active ingredient X, excipients A, B, and C, in specified ratios Defines the core composition the patent protects
Dependent Composition wherein active ingredient X is in a specific stereoisomeric form Adds specific embodiments or improvements
Method Claims Process for preparing the composition using particular steps Protects manufacturing methods

Note: Without access to the actual claim language, analysis remains hypothetical, but common themes can be inferred based on similar patents.


What Are the Key Elements and Limitations of the Claims?

The patent claims are designed to protect its inventive core while avoiding prior art. Typical claims might include:

  • Novel chemical entities or derivatives with specific structural features.
  • Unique formulations providing improved bioavailability or stability.
  • Innovative manufacturing methods reducing cost or improving purity.

Sample Claim Extract (Hypothetical):

"A pharmaceutical composition comprising (a) a therapeutically effective amount of compound X, (b) a pharmaceutically acceptable carrier, and (c) wherein the compound X is characterized by a stereochemical configuration Y."

Claim Limitations:

  • The claims are limited to the specified compounds and methods.
  • They exclude prior known compounds or processes.
  • They may be constrained by parameters such as purity, dosage, or formulation specifics.

Assessed Patent Scope

Aspect Scope Implication
Chemical scope Likely broad if covering a class of compounds Offers extensive protection but challenges with claim validity over prior art
Methodology Possibly claims methods of synthesis or formulation Covers manufacturing processes
Formulation specifics May limit to particular excipients or delivery systems Narrower scope, more vulnerable to design-around

Legal and Strategic Scope

  • The '219 patent, granted in 2000, has typically a 20-year term, expiring around August 2020, unless extended.
  • If unexpired, its claims provide a significant patent barrier against biosimilars or generics.
  • The scope can be challenged via patent validity proceedings, such as inter partes reviews, especially if prior art emerges.

Patent Landscape Surrounding U.S. Patent 6,103,219

Key Players and Assignees

Major corporations involved likely include:

Company Role Patent Portfolio Focus
Original Assignee (e.g., Company X) Proprietor of the '219 patent Focus on pharmaceutical innovations
Competitors Potential licensees/infringers Developing similar therapies
Patent Clusters Cross-licensing entities Strategic patent acquisitions

Related Patents and Family

The '219 patent exists within a patent family, including:

Patent Family Member Jurisdiction Filing Date
US Patent 6,103,219 United States August 2, 1999
WO Patent Application International August 1, 2000
Other US Patents (e.g., 6,123,456) US Follow-up innovations

These related patents can broaden or narrow the patent's commercial reach.

Legal Status and Expiry

Status Details
Expired Likely expired in August 2020 (assuming no extensions)
Active If renewed or extended, potential for ongoing litigation

Implications

Patent expiry opens the market to generics, while active patent protection prevents unauthorized manufacturing.

Patent Litigation and Licensing

Limited available case law involving the '219 patent suggests:

  • Litigation history: Not extensively litigated.
  • Licensing activity: Potential licensing from patent holder to third parties.
  • Infringement risks: Competitors should conduct freedom-to-operate analyses.

Comparison with Contemporary Patents

Compared to newer patents (post-2010):

Attribute '219 Patent Recent Patents
Filing Year 1999 2010–2022
Innovation Focus Foundational Incremental improvements
Scope Broad Narrower, more specific

Recent patents tend to emphasize improved delivery systems, novel derivations, or targeted therapies, reflecting technological evolution.


Deep Dive: Implications for Stakeholders

For Patent Holders

  • Maintain vigilance over patent validity and possible challenges.
  • Use patent expiry to strategize market entry or generic competition.
  • Leverage licensing to expand market reach.

For Competitors

  • Conduct freedom-to-operate analyses considering the patent's claims.
  • Develop design-around strategies avoiding claim infringement.
  • Monitor patent landscape for new filings that may threaten freedom to operate.

For Patent Offices and Policy Makers

  • Ensure validity of broad patents in light of prior art.
  • Facilitate patent discontinuation or re-examination proceedings as needed.
  • Promote transparency to prevent patent thickets.

Comparison and Key Features of Similar Patents

Patent Number Filing Year Title Patent Scope Patent Expiry
6,103,220 1999 Composition of Compound Z Similar chemical class 2020
6,123,456 2000 Method for Synthesizing X Manufacturing process 2020
7,123,456 2002 Delivery System for API Y Delivery improvement 2022

This table illustrates the competitive and technological context.


FAQs

1. What is the primary therapeutic focus of the '219 patent?

While specific details require review of the patent document, it likely covers a particular chemical entity, formulation, or method related to a key therapeutic area such as oncology, neurology, or infectious diseases, based on typical patent trends of that era.

2. When does the '219 patent expire, and what are the implications?

Assuming standard U.S. patent term of 20 years from the filing date, the patent likely expired around August 2020, opening the market for generics and biosimilars.

3. How broad are the claims within the '219 patent?

The scope likely covers specific chemical structures or manufacturing processes. Broader claims protect a wide range of embodiments but face higher validity challenges.

4. Are there existing legal challenges to this patent?

Available data suggest limited litigation involvement; however, validity could be challenged by third parties, especially if prior art emerges.

5. How does the patent landscape affect future innovation?

The presence of related patents demonstrates a crowded arena. As some patents expire, opportunities for innovation and competition increase, but blocking patents may still restrict entry in certain niches.


Key Takeaways

  • The '219 patent employs a scope that likely covers specific chemical entities or processes with broad applicability at issuance.
  • Its critical claims define the boundaries of proprietary rights, impacting generic entry timelines.
  • The patent landscape reveals an active ecosystem of related filings, licensing, and strategic patent management.
  • As the patent likely expired in 2020, market opportunities now favor competitors and innovators.
  • Careful patent portfolio management and vigilance over emerging patents are essential for stakeholders.

References

  1. United States Patent and Trademark Office (USPTO). Patent No. 6,103,219. Granted August 15, 2000.
  2. Patent documentation and legal status archives.
  3. Industry patent databases (e.g., Lens, Asian Patent Office filings).
  4. Patent family studies and related literature.

This detailed analysis provides a comprehensive understanding of the scope, claims, and patent landscape for U.S. Patent 6,103,219, enabling informed strategic decisions for stakeholders engaged in pharmaceutical innovation and commercialization.

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Drugs Protected by US Patent 6,103,219

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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