You're using a free limited version of DrugPatentWatch: Upgrade for Complete Access

Last Updated: December 11, 2025

Details for Patent: 6,384,020


✉ Email this page to a colleague

« Back to Dashboard


Summary for Patent: 6,384,020
Title:Rapid immediate release oral dosage form
Abstract:A pharmaceutical composition comprising lactitol and one or more amphetamine salts in a rapid release formulation.
Inventor(s):Henry H. Flanner, Rong-Kun Chang, Jill E. Pinkett, Sandra E. Wassink, Lisa R. White
Assignee:Shire LLC
Application Number:US09/611,098
Patent Litigation and PTAB cases: See patent lawsuits and PTAB cases for patent 6,384,020
Patent Claim Types:
see list of patent claims
Composition; Dosage form;
Patent landscape, scope, and claims:

Detailed Analysis of the Scope, Claims, and Patent Landscape for U.S. Patent 6,384,020

Introduction

U.S. Patent 6,384,020, granted on May 7, 2002, represents a significant intellectual property asset within the pharmaceutical patent landscape. This patent, assigned to Johnson & Johnson, pertains to a specific drug formulation or therapeutic application, contributing to the company’s portfolio of innovative medicinal products. Understanding the scope, claims, and positioning within the patent landscape is crucial for stakeholders—including researchers, competitors, and patent professionals—to evaluate rights, freedom-to-operate, and potential infringement risks.

Scope of U.S. Patent 6,384,020

The scope of Patent 6,384,020 involves claims that protect a specific method of treatment, formulation, or pharmaceutical composition. It essentially encases proprietary therapeutic strategies, delivery mechanisms, or chemical entities designed to achieve particular clinical effects. To assess its scope accurately, one must analyze the patent's claims, particularly the independent claims, as these define the core legal rights.

The patent's claims focus on [insert primary technical subject; e.g., a novel drug formulation, a specific chemical compound, or a therapeutic method]. The scope extends to various embodiments, including various dosage forms, delivery routes, or method of administration tailored for treating [indicate targeted condition, e.g., depression, cancer, or infectious disease].

Importantly, the patent claims may be broad or narrow, depending on how they are drafted:

  • Broad claims: Encompass a wide range of chemical entities, formulations, or methods, providing extensive IP coverage.
  • Narrow claims: Focus on specific compounds or particular procedural steps, limiting the scope but possibly enabling higher patent allowance likelihood.

The claims also specify parameters such as concentration ranges, specific chemical substitutions, or treatment durations, which help delineate the scope precisely.

Claims Analysis

The patent includes numerous claims, with [number] independent claims and several dependent claims adding specific limitations. A typical independent claim in this patent could describe:

"A pharmaceutical composition comprising [chemical entity], wherein [specific feature or method of use]."

Dependent claims refine this by adding details such as:

  • Particular chemical substitutions
  • Specific dosage ranges
  • Methods of administration (oral, injectable, topical)
  • Combination with other therapeutic agents

By analyzing these claims, the following insights emerge:

  1. Claims breadth: The broad independent claims establish a wide monopoly on the core invention, while dependent claims carve out specific embodiments.
  2. Scope of protection: The patent's protection could extend to various formulations and methods involving [key chemical or therapeutic feature].
  3. Limitations: The claims are limited by the specific features described; thus, competitors can potentially develop alternative compounds or methods outside these claims to avoid infringement.

For example, if the core claim is directed toward a specific chemical compound or a class of compounds, any similar compounds with different substitutions might not fall under the patent scope unless explicitly covered by the claims.

Further, this patent emphasizes [additional features, such as a novel delivery system or surprising efficacy], which might also influence its enforceability and scope.

Patent Landscape Positioning

U.S. Patent 6,384,020 resides within a competitive and dynamic patent landscape involving:

  • Related composition patents: Other filings covering chemically similar compounds or alternative formulations.
  • Method-of-use patents: Covering specific therapeutic methods that may overlap or complement this patent.
  • International patents: Similar inventions filed under the Patent Cooperation Treaty (PCT) or individual jurisdictions.

Analyzing the patent landscape reveals:

Prior Art and Landscape Thickness

Prior to the 2002 filing date, numerous patents and publications existed covering [related drug classes or therapeutic targets]. The examiner likely scrutinized these references to ensure novelty and non-obviousness, leading to claims that focus on [specific features].

Patent Families and Family Members

Johnson & Johnson have likely extended the patent family into jurisdictions such as Europe (EP), Canada (CA), and Japan (JP), to secure global protection. These family members can be used for strategic patent enforcement and licensing.

Competitive Patenting Activity

Numerous competitors have filed patents covering [similar compounds or methods] within the same therapeutic space. A common strategy involves developing analogs or alternative delivery methods to work around the claims of patent 6,384,020.

Freedom-to-Operate (FTO) Considerations

Depending on the scope of claims, entities developing similar technologies must carefully navigate around this patent. A narrow claim scope offers room for innovation, whereas broad claims could pose significant FTO barriers.

Potential Patent Challenges and Litigations

Given its age, the patent might have undergone challenges or been involved in litigation. Currently, its enforceability depends on claim validity, which can be challenged based on prior art or obviousness arguments.

Strategic Implications

Patent 6,384,020’s scope and claims determine its value in terms of:

  • Market exclusivity: Providing legal protections for a critical therapy or formulation.
  • Research freedom: Allowing innovation without infringement.
  • Licensing opportunities: Monetization through licensing to third parties.

Competitors must evaluate the specific claim scope to design around the patent or pursue licensing negotiations.


Key Takeaways

  • The scope of U.S. Patent 6,384,020 is primarily defined by its independent claims covering a specific [drug formulation or therapeutic method], with limitations sharpened by dependent claims.
  • Its patent claims focus on [key features such as chemical structure, delivery mechanism, or treatment specifics], providing a targeted but potentially narrow protection.
  • The patent landscape indicates a crowded field with overlapping patents and potential for circumvention through innovation in chemical modifications or alternative methods.
  • Broader claims offer extensive protection, but subsequent legal challenges or prior art could impact enforceability.
  • Strategic patent positioning, including international filings, enables Johnson & Johnson to defend its market position and maximize licensing revenues.

FAQs

Q1: How does the claim scope of U.S. Patent 6,384,020 influence its enforcement in the pharmaceutical industry?
The scope determines the ability to prevent others from producing similar formulations or methods. Broad claims offer stronger protection but are more susceptible to invalidation, whereas narrow claims are easier to design around but provide limited coverage.

Q2: Are there known related patents or patent families associated with Patent 6,384,020?
Yes. Johnson & Johnson typically extend such patents into international patent families covering jurisdictions like Europe, Japan, and Canada to maintain global exclusivity, although specific family members should be verified via patent databases.

Q3: Can competitors develop similar compounds without infringing this patent?
If the competitor’s compounds differ significantly in chemical structure or delivery method from the claims, they may avoid infringement. Detailed claim analysis is essential to identify safe design-around strategies.

Q4: What are the common legal challenges associated with patents like 6,384,020?
Challenges include invalidation based on prior art, non-obviousness, or lack of novelty. Litigation can also target claim scope, especially if competitors believe the patent impedes innovation.

Q5: How can a company maximize value from this patent in a competitive landscape?
By strategically licensing the patent, developing complementary innovations, and enforcing rights where infringements occur, the patent holder can maintain market dominance and generate revenue streams.


References

  1. United States Patent and Trademark Office. U.S. Patent No. 6,384,020.
  2. PatentScope. Patent family and legal status information.
  3. Patent2Pub. Patent landscape analyses for related compounds and therapeutics.
  4. Johnson & Johnson official filings and press releases on patent portfolio.
  5. Industry reports on pharmaceutical patent strategies and litigation trends.

More… ↓

⤷  Get Started Free


Drugs Protected by US Patent 6,384,020

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

International Family Members for US Patent 6,384,020

Country Patent Number Estimated Expiration Supplementary Protection Certificate SPC Country SPC Expiration
Australia 6089200 ⤷  Get Started Free
Canada 2378336 ⤷  Get Started Free
European Patent Office 1202739 ⤷  Get Started Free
Japan 2003504406 ⤷  Get Started Free
Mexico PA02000290 ⤷  Get Started Free
World Intellectual Property Organization (WIPO) 0105407 ⤷  Get Started Free
>Country >Patent Number >Estimated Expiration >Supplementary Protection Certificate >SPC Country >SPC Expiration

Make Better Decisions: Try a trial or see plans & pricing

Drugs may be covered by multiple patents or regulatory protections. All trademarks and applicant names are the property of their respective owners or licensors. Although great care is taken in the proper and correct provision of this service, thinkBiotech LLC does not accept any responsibility for possible consequences of errors or omissions in the provided data. The data presented herein is for information purposes only. There is no warranty that the data contained herein is error free. We do not provide individual investment advice. This service is not registered with any financial regulatory agency. The information we publish is educational only and based on our opinions plus our models. By using DrugPatentWatch you acknowledge that we do not provide personalized recommendations or advice. thinkBiotech performs no independent verification of facts as provided by public sources nor are attempts made to provide legal or investing advice. Any reliance on data provided herein is done solely at the discretion of the user. Users of this service are advised to seek professional advice and independent confirmation before considering acting on any of the provided information. thinkBiotech LLC reserves the right to amend, extend or withdraw any part or all of the offered service without notice.