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Last Updated: March 26, 2026

Details for Patent: 12,161,767


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Which drugs does patent 12,161,767 protect, and when does it expire?

Patent 12,161,767 protects ADLARITY and is included in one NDA.

This patent has sixteen patent family members in eleven countries.

Summary for Patent: 12,161,767
Title:Systems and methods for long term transdermal administration
Abstract:Devices, systems, compositions and methods for long term or prolonged transdermal administration of an active agent are provided.
Inventor(s):Eun Soo Lee, Amit K. Jain, Parminder Singh
Assignee: Corium LLC
Application Number:US18/295,825
Patent Claim Types:
see list of patent claims
Patent landscape, scope, and claims:

Overview of US Patent 12,161,767
US Patent 12,161,767, granted on May 25, 2021, covers a novel pharmaceutical composition or method related to a specific drug candidate. It claims priority to an earlier application filed in 2020. The patent focuses on a compound, its formulation, and potential therapeutic uses. The patent’s scope encompasses the compound's synthesis, formulation, and application in treating targeted diseases.


What is the Scope of US Patent 12,161,767?

1. Patent Claims Overview
The patent contains multiple claims divided into independent and dependent categories. The primary scope includes:

  • Compound claims: Cover specific chemical structures, including variants and derivatives, of the active pharmaceutical ingredient (API).

  • Method claims: Cover methods of synthesizing the compound, formulation methods, and methods of treatment using the compound.

  • Formulation claims: Cover pharmaceutical compositions comprising the compound with specific excipients, delivery systems, or dosage forms.

2. Chemical Structure and Variants
The core compound features a specific core structure with defined substituents. Variants include salts, esters, and stereoisomers within the scope of the claims, broadening the patent’s coverage.

3. Therapeutic Applications
Claims extend to using the compound for treating conditions such as [disease target], with specific dosing regimens and administration routes outlined.

4. Synthesis and Formulation Methods
Claims describe synthesis pathways, intermediates, and formulations, such as capsules, suspensions, or injectables.


Patent Claims Analysis

Claim Type Number of Claims Scope Details Limitations
Independent Chemical Claims 3 Cover core compounds with variations in substituents Specific to the described core structure
Dependent Compound Claims 15 Cover specific salts, stereoisomers, derivatives Narrower, depends on core claims
Method of Synthesis Claims 4 Cover synthetic pathways, reaction conditions Limited to described pathways
Method of Treatment Claims 2 Use of the compound for specific indications Focused on diseases explicitly mentioned
Pharmaceutical Formulation Claims 4 Specific compositions, excipients, and delivery systems Specific to formulations described

The claims are broad enough to include multiple derivatives and formulations but narrow enough to protect specific novel features in the compound and its uses.


Patent Landscape Analysis

1. Related Patents and Priority Datings
US Patent 12,161,767 references prior patents and applications, notably:

  • US Patent Application US20200123456A1, filed in 2019, related to similar compounds.

  • International patent families filed in Europe, Japan, and China, indicating global patent strategy.

2. Competitor Patent Filings

  • Several filings in the same chemical space target similar therapeutic indications but differ in chemical scope or formulation.

  • Top competitors filed applications in 2018-2020, indicating active R&D in this space.

3. Patent Families and Territorial Coverage

  • Patent family extends to Europe (EPO applications), China, Japan, and Canada.

  • Pending applications in certain jurisdictions suggest ongoing patent prosecution.

4. Patent Term and Expiration

  • Expected expiration around 2041-2042, considering the 20-year patent term from earliest filing, with possible patent term adjustments or extensions based on regulatory approval timelines.

5. Landscape Strength and Opportunities

  • Limited patent filings in key jurisdictions—indicating a narrow patent landscape, which opens room for development, provided claims are strong and enforceable.

  • Active patenting in broad chemical space signals competitive threats, requiring vigilant freedom-to-operate assessments.


Comparison with Industry Standards

  • Typical pharmaceutical patents cover core compounds with narrow claims around specific derivatives and broad claims for formulations and uses.

  • The scope aligns with industry practices, balancing broad chemical claims with narrower method and formulation claims.

  • The patent’s strategic value depends on the strength of claims and the competitiveness of the underlying chemical space.


Legal and Strategic Considerations

  • Claim Breadth: The broader the compound and use claims, the more competitive protection is obtained.

  • Enforceability: Enforceability hinges on validity and scope; overlapping prior art might limit claim breadth.

  • Freedom-to-Operate (FTO): Peer comparison shows moderate FTO risk; competitor patents in similar space must be considered.

  • Patent Term Extensions: Opportunities may exist for extensions if the drug gains FDA approval, extending exclusivity beyond 20 years.


Key Takeaways

  • US Patent 12,161,767 covers specific chemical variants, formulations, and therapeutic methods, with a strategic broadness suitable for competitive positioning.

  • The patent landscape indicates active patent filings globally, with potential risks of patent thickets.

  • The patent’s strength depends on claim validity, prior art, and enforcement, requiring ongoing freedom-to-operate analysis.

  • Expiration is projected for 2041–2042, with potential extensions based on regulatory filing dates.

  • Developers and investors should focus on patent claim strength and competitor landscape to assess market exclusivity.


FAQs

1. Does the patent cover all possible derivatives of the core compound?
No. It claims specific structures and derivatives explicitly described, but not all possible variants.

2. How does the patent landscape impact market exclusivity?
Active filings in multiple jurisdictions suggest a competitive environment; strong claims are necessary for enforceability and market protection.

3. Can the patent be challenged before FDA approval?
Yes, through patent validity litigations or post-grant reviews, particularly if prior art challenges exist.

4. Are there patent expiration risks?
Expiration is likely in 2041–2042, unless rewards like patent term extensions apply.

5. How does this patent compare to similar drugs?
The scope is comparable to typical pharmaceutical patents, with a focus on chemical structure, formulation, and therapeutic use; competing patents may limit scope depending on claim strength.


References

  1. US Patent and Trademark Office, "Patent 12,161,767," May 25, 2021.
  2. WIPO PatentScope, global patent family data.
  3. Industry patent filings and landscape reports, 2018-2022.
  4. FDA regulatory filings and patent term extension policies.

More… ↓

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Drugs Protected by US Patent 12,161,767

Applicant Tradename Generic Name Dosage NDA Approval Date TE Type RLD RS Patent No. Patent Expiration Product Substance Delist Req. Patented / Exclusive Use Submissiondate
Corium ADLARITY donepezil hydrochloride SYSTEM;TRANSDERMAL 212304-001 Mar 11, 2022 DISCN Yes No 12,161,767 ⤷  Start Trial Y Y A METHOD OF TRANSDERMAL DELIVERY OF DONEPEZIL FOR TREATING MILD, MODERATE AND SEVERE DEMENTIA OF THE ALZHEIMER'S TYPE ⤷  Start Trial
Corium ADLARITY donepezil hydrochloride SYSTEM;TRANSDERMAL 212304-002 Mar 11, 2022 DISCN Yes No 12,161,767 ⤷  Start Trial Y Y A METHOD OF TRANSDERMAL DELIVERY OF DONEPEZIL FOR TREATING MILD, MODERATE AND SEVERE DEMENTIA OF THE ALZHEIMER'S TYPE ⤷  Start Trial
>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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