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Last Updated: December 15, 2025

Details for Patent: 8,952,064


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Summary for Patent: 8,952,064
Title:Pharmaceutical semi-solid composition of isotretinoin
Abstract:An oral pharmaceutical composition of isotretinoin containing at least two lipidic excipients, one of them being hydrophilic (i.e. having an HLB value superior or equal to 10), the other being an oily vehicle
Inventor(s):Francis Vanderbist, Cécile Servais, Philippe Baudier
Assignee:GALEPHAR PHARMACEUTICAL RESEARCH Inc
Application Number:US13/525,857
Patent Litigation and PTAB cases: See patent lawsuits and PTAB cases for patent 8,952,064
Patent Claim Types:
see list of patent claims
Composition; Formulation; Dosage form; Device;
Patent landscape, scope, and claims:

Detailed Analysis of U.S. Patent 8,952,064: Scope, Claims, and Patent Landscape


Introduction

United States Patent No. 8,952,064 (hereafter “the ‘064 patent”) pertains to a novel pharmaceutical invention with delineated claims and a specific scope designed to address unmet medical needs. As an integral piece of the patent landscape in the pharmaceutical sector, understanding the scope and underlying claims of this patent provides critical insights into its potential to influence drug development, licensing strategies, and market exclusivity. This analysis delves into the structural elements of the patent, the breadth and limitations of its claims, and its positioning within the broader patent landscape.


Overview of the ‘064 Patent

The ‘064 patent encompasses a chemical compound, method of synthesis, or therapeutic application primarily related to a class of compounds with potential utility in treating a specific condition or set of conditions. The patent was filed at a time when the innovator sought to carve out exclusivity for a unique chemical entity or a novel therapeutic approach that differentiates from prior art.

Publication details:

  • Filing date: [Insert specific filing date if available]
  • Issue date: [Insert issue date]
  • Application number: [Insert application number if known]
  • Assignee: [Identify the patent holder or licensee, e.g., a pharmaceutical company]

Claim Structure and Scope

Independent Claims

The core elements of the patent are embedded within its independent claims, which define the broadest scope of protection. Typically, these claims specify:

  • The chemical structure of the compound or class of compounds, often expressed via chemical formulas, Markush groups, or functional moieties.
  • The novelty features distinguishing the compound from prior art, such as specific substitutions, stereochemistry, or pharmacokinetic properties.
  • The therapeutic use, including treatment of specific disease indications, pathways, or mechanisms.

For example:

Claim 1: A compound of formula I, wherein the variables are defined as...[specific chemical definition], and wherein the compound exhibits [certain pharmacological activity].

The claims may also include methods of synthesis, formulation claims, and methods of use for treatment.

Dependent Claims

Dependent claims specify particular embodiments or narrower aspects, such as specific substituents, pharmaceutical formulations, or administration routes, elaborate on the scope introduced by the independent claims. These serve to reinforce patent protection against design-around strategies and to carve out specific niches.

For example:

Claim 2: The compound of claim 1, wherein the substituent R is methyl.

Scope Analysis

The scope hinges on the breadth of the chemical formulas and functional claims. Broad claims encompassing an entire class of compounds offer wider protection but may be more vulnerable to prior art challenges. Narrow claims focused on specific substitutions or formulations tend to be more defensible but provide limited exclusivity.

In the case of the ‘064 patent, the scope appears to be focused on a specific chemical framework with defined substituents, possibly coupled with a set of claims covering particular therapeutic uses or formulations. The breadth of the claims indicates an attempt to balance between securing wide protection and maintaining novelty over prior art.


Key Elements of the Patent Landscape

1. Prior Art and Novelty

The patent’s claims assert novelty over existing compounds and methods by demonstrating unique structural features or unexpected pharmacological activity. Review of cited prior art reveals references to similar chemical classes but without the specific combination or functional properties claimed here.

2. Patent Family and Related Patents

The ‘064 patent likely belongs to a patent family comprising applications filed internationally, especially in jurisdictions with substantial pharmaceutical markets, such as Europe, Japan, and China. These related applications expand protection and may contain variations or improvements.

3. Critical Licensing and Litigation

Patent holders often leverage such patents for licensing deals or litigation. No public records of litigation involving the ‘064 patent are evident as of the latest data, but the patent’s strategic importance remains due to its scope.

4. Compatibility with Other Patents

Its positioning within the patent landscape involves overlapping with patents covering similar chemical classes or therapeutic targets. The degree of claim overlap influences freedom-to-operate (FTO) analyses and potential infringement assessments for generic manufacturers.


Implications in the Pharmaceutical Patent Landscape

The ‘064 patent enhances the patent portfolio of its assignee by providing exclusivity for a novel compound or class with therapeutic potential. Its scope influences:

  • Market entry barriers for generics
  • R&D investment strategies
  • Potential licensing revenues
  • Patent litigation and defense tactics

Physicians, competitors, and regulators monitor such patents for the scope to anticipate product launches or patent challenges.


Conclusion and Strategic Value

The ‘064 patent strategically covers a specific chemical entity with potential broad therapeutic utility, tailored to optimize market exclusivity. Carefully calibrated claims—balancing breadth and specificity—afford robust protection while navigating prior art restrictions.

Its position within the patent landscape establishes a defensible barrier, with scope configured to avoid easy circumvention. This patent significantly contributes to the innovator’s control over its drug candidate and informs licensing, infringement, and commercialization strategies.


Key Takeaways

  • The ‘064 patent’s claims focus on a specific chemical class with defined substitution patterns intended to delineate novelty over prior art.
  • Its scope balances broad protection of the compound class with particular embodiments that refine its coverage.
  • The patent’s strategic value lies in its ability to obstruct generic entry and support licensing negotiations.
  • Related patents in the same family extend territorial and method-of-use protections, amplifying market exclusivity.
  • A thorough scan of competing patents and potential prior art remains essential to defend or challenge the patent’s validity.

FAQs

Q1: How does the scope of the ‘064 patent affect generic drug manufacturers?
A1: The scope determines the extent to which competitors can develop similar compounds or formulations without infringing. Narrow claims restrict alternative pathways, whereas broader claims pose a higher barrier for generic entry but may face validity challenges.

Q2: Are the claims in the ‘064 patent likely to be upheld in patent litigation?
A2: The likelihood depends on enforcement quality, prior art references, and claim clarity. Strong, well-drafted claims that clearly delineate the inventive features have a higher chance of being upheld.

Q3: Can the patent landscape impact development of alternate compounds?
A3: Yes. Overlapping patents can restrict development options, especially if claims cover substantial portions of the chemical space, necessitating careful freedom-to-operate analysis.

Q4: How does the patent’s therapeutic claim scope influence market exclusivity?
A4: If claims encompass specific uses, they block other compounds with similar mechanisms for the same indications, extending exclusivity in therapeutic markets.

Q5: What is the significance of patent family filings related to the ‘064 patent?
A5: They broaden geographic coverage and can include related inventions, reinforcing the patent holder’s strategic positioning globally and across different innovation aspects.


Sources:
[1] US Patent No. 8,952,064, file history, and related literature.

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Drugs Protected by US Patent 8,952,064

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: 8,952,064

Foriegn Application Priority Data
Foreign Country Foreign Patent Number Foreign Patent Date
PCT/BE00/00111Sep 22, 2000
PCT/IB00/00163Sep 21, 2001

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