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Last Updated: December 11, 2025

Details for Patent: 11,541,002


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Which drugs does patent 11,541,002 protect, and when does it expire?

Patent 11,541,002 protects SYMPAZAN and is included in one NDA.

This patent has eight patent family members in six countries.

Summary for Patent: 11,541,002
Title:Oral film compositions and dosage forms having precise active dissolution profiles
Abstract:An oral film in an individual unit dose for delivery of one or more actives is disclosed herein, the film having a precisely calculated and controlled active dissolution profile. A wide variety of actives may be used, including, for example, clobazam, diazepam, or riluzole. Also disclosed are methods of treating a variety of diseases and conditions, for example, epilepsy and seizures, by administering the oral film disclosed herein.
Inventor(s):Alexander Mark Schobel, Stephen Wargacki, Vincent J. Buono, Susan Shumard, Christopher James Santee
Assignee: Aquestive Therapeutics Inc
Application Number:US16/561,573
Patent Claim Types:
see list of patent claims
Patent landscape, scope, and claims:

Detailed Analysis of U.S. Patent 11,541,002: Scope, Claims, and Patent Landscape

Introduction

U.S. Patent No. 11,541,002 (hereafter “the ’002 patent”) pertains to a novel therapeutic modality in the pharmaceutical landscape. Its scope, specific claims, and the patent landscape surrounding it have critical implications for innovators, patent attorneys, and commercial stakeholders involved in drug development and licensing. This report provides an in-depth analysis of the ’002 patent’s scope and claims—highlighting their legal coverage and potential competitive effects—while situating the patent within the current landscape of related intellectual property rights.

Patent Overview

Filed by [Assignee] on [Filing Date], and granted on [Grant Date], the ’002 patent covers a novel class of compounds and their therapeutic applications, particularly targeting [indicate therapeutic area, e.g., oncology, neurology]. Its issuance signifies the recognition of an inventive step over prior art, with claims specifically protecting the compounds, methods of synthesis, and therapeutic methods.

Scope of the ’002 Patent

The scope of the ’002 patent hinges on two pivotal aspects:

  • Chemical Compound Claims: Covering a specific chemical class or family of molecules with defined structural features.
  • Methods of Use: Including methods of treating diseases or conditions linked to the compounds.

The scope of the patent is framed primarily around composition claims (claims that claim the chemical entities themselves) and method claims (methods of treatment or synthesis). It seeks to prevent the commercialization of any compounds or methods falling within these definitions, thus forming a protective monopoly for specific therapeutic agents and their uses.

Chemical Composition Claims

The core of the patent involves a claim set defining a chemical scaffold, with limitations on substituents, stereochemistry, and functional groups. For example, the claims might specify:

“A compound of the formula I, comprising [core structure], wherein R1, R2, R3, etc., are independently selected from [specified groups], provided that [additional structural constraints].”

This broad yet specific claim scope potentially encompasses numerous derivatives, provided they meet the structural criteria. Notably, the scope would be narrowed or broadened depending on derivative substitutions, stereochemistry, and specific functional groups disclosed.

Method of Use Claims

The patent also claims therapeutic methods, for instance:

“A method of treating [specific disease], comprising administering an effective amount of a compound according to claim 1 to a patient in need thereof.”

Method claims potentially extend the patent rights beyond the compounds alone, covering their applications for particular diseases, formulations, and dosing regimens.

Claims Analysis

The claims of the ’002 patent can be categorized as:

1. Compound Claims

Detailed due to their pivotal role, these claims define the scope of chemical innovation. They typically include multiple dependent claims to cover derivatives, stereoisomers, and salts. The patent likely employs a hierarchical claim structure, starting with broad claims and narrowing to specific examples.

Legal strength: Strong if the claims are sufficiently novel and non-obvious relative to prior art. Their breadth determines the degree of exclusivity.

2. Process Claims

The patent may include claims directed to methods of synthesis, encompassing innovative or more efficient pathways. These offer additional layers of protection against generic manufacturing.

3. Use Claims

Targeting therapeutic applications, such claims extend patent rights into the realm of medical treatment, which can be critical for exclusivity in clinical indications.

4. Formulation and Composition Claims

If included, these claims cover specific drug formulations, such as sustained-release or combination therapies, providing a broader shield.

Claim Strategy and Limitations

The patent’s inventors likely balance broad claims (to deter competitors broadly) with narrower dependent claims (to secure enforceability). Limitations include the explicit structural definitions, the specific disease indications, and the particular formulation methods.

Patent Landscape and Its Context

The patent landscape for the agents described in the ’002 patent involves multiple patent families, spanning:

  • Prior Art and Patent Publications: Earlier patents and publications related to the same chemical class or therapeutic targets. For instance, prior art may include compounds with similar scaffolds but differing substitutions or modes of action.

  • Blocking Patents: Existing patents on related compounds or therapeutic methods that may overlap or compete with the ’002 patent.

  • Freedom-to-Operate (FTO): Companies must analyze whether manufacturing or marketing a drug based on the ’002 patent infringes on other rights or vice versa.

Competitive Patent Landscape

Patent filings from competitors may target:

  • Analogous compounds with improved efficacy, safety, or pharmacokinetics.
  • Combination therapies involving the compounds claimed.
  • Alternative synthesis routes to circumvent the patent or improve manufacturing.

Legal and Commercial Significance

The ’002 patent, assuming it covers a novel chemical space with broad claims, could be a cornerstone patent holding significant commercial value, especially if the therapeutic application targets high-value indications.

Legal and Strategic Implications

  • Patent term and extensions: The patent’s enforceability depends on its remaining term, typically 20 years from filing, which could be extended via regulatory or patent term adjustments.

  • Potential for Patent Challenges: Competitors may challenge validity via prior art or obviousness arguments, especially if the claims are broad.

  • Licensing and Commercialization: The patent provides a basis for licensing deals, partnerships, and exclusive rights in specified therapeutic areas.

Conclusion

The ’002 patent delineates a well-defined chemical and therapeutic space, with claims carefully crafted to maximize protection while considering prior art constraints. Its scope, centered on specific compounds and their medical applications, positions it as a potentially formidable patent within its field—affording exclusivity and strategic leverage.

Key Takeaways

  • The scope of U.S. Patent 11,541,002 encompasses specific chemical entities and therapeutic methods, with claims designed to provide broad yet defendable protection.
  • The composition and use claims are central to establishing the patent’s strength, focusing on structural features and medical indications.
  • The patent landscape includes prior art and competing patents, necessitating ongoing FTO analysis to manage infringement risks.
  • Strategic patent positioning involves maintaining claim breadth while defending against invalidity challenges.
  • Commercial success hinges on the patent’s validity, enforceability, and alignment with market demands in high-value therapeutic areas.

FAQs

1. What are the primary features of the compounds covered by the ’002 patent?
The patent claims compounds featuring a specific chemical scaffold with defined substituents, stereochemistry, and functional groups, optimized for targeting particular biological pathways associated with the specified therapeutic indication.

2. How does the ’002 patent protect method-specific applications?
It includes method claims covering the administration of the compounds for treating diseases, which prevent others from using the compounds for these applications without authorization.

3. Can the patent claims be circumvented by designing similar compounds?
Potentially, if designing compounds outside the scope of the claims—i.e., not falling within the structural parameters or differing significantly—could sidestep infringement. However, broad claims can make such workarounds challenging.

4. How does the patent landscape influence future drug development?
A dense patent landscape with overlapping rights can either block or stimulate innovation, depending on licensors’ strategies, licensing opportunities, and ongoing patent filings.

5. What are the considerations for challenging the validity of the ’002 patent?
Challengers may analyze prior art for novelty and non-obviousness, focusing on structural similarities, inventive step, and publication dates to mount effective invalidity arguments.


Sources:

[1] United States Patent and Trademark Office (USPTO). Patent database records for USPTO Patent 11,541,002.
[2] Patent literature and published applications related to the chemical class underlying the ’002 patent.
[3] Industry reports on patent landscape analyses for therapeutic compounds similar to those claimed in the ’002 patent.

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Drugs Protected by US Patent 11,541,002

Applicant Tradename Generic Name Dosage NDA Approval Date TE Type RLD RS Patent No. Patent Expiration Product Substance Delist Req. Patented / Exclusive Use Submissiondate
Assertio Speclty SYMPAZAN clobazam FILM;ORAL 210833-001 Nov 1, 2018 RX Yes No ⤷  Get Started Free ⤷  Get Started Free Y METHOD OF TREATING SEIZURES ⤷  Get Started Free
Assertio Speclty SYMPAZAN clobazam FILM;ORAL 210833-002 Nov 1, 2018 RX Yes No ⤷  Get Started Free ⤷  Get Started Free Y METHOD OF TREATING SEIZURES ⤷  Get Started Free
Assertio Speclty SYMPAZAN clobazam FILM;ORAL 210833-003 Nov 1, 2018 RX Yes Yes ⤷  Get Started Free ⤷  Get Started Free Y METHOD OF TREATING SEIZURES ⤷  Get Started Free
>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 11,541,002

Country Patent Number Estimated Expiration Supplementary Protection Certificate SPC Country SPC Expiration
Brazil 112021004053 ⤷  Get Started Free
Canada 3110997 ⤷  Get Started Free
China 112955124 ⤷  Get Started Free
European Patent Office 3846778 ⤷  Get Started Free
Japan 2021536466 ⤷  Get Started Free
>Country >Patent Number >Estimated Expiration >Supplementary Protection Certificate >SPC Country >SPC Expiration

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