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Last Updated: March 26, 2026

Details for Patent: 10,647,649


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Which drugs does patent 10,647,649 protect, and when does it expire?

Patent 10,647,649 protects VTAMA and is included in one NDA.

This patent has twenty-seven patent family members in fourteen countries.

Summary for Patent: 10,647,649
Title:Process for preparing tapinarof
Abstract:The present invention provides processes for the preparation of 3, 5-Dihydroxy-4-isopropyl-trans-stilbene or a salt or solvate thereof and novel intermediates used therein. In some embodiments the 3, 5-Dihydroxy-4-isopropyl-trans-stilbene is prepared from (E)-2-chloro-2-isopropyl-5-styrylcyclohexane-1,3-dione. Also disclosed are crystal forms of 3, 5-Dihydroxy-4-isopropyl-trans-stilbene or a salt or solvate thereof and pharmaceutical compositions comprising same.
Inventor(s):Ian Paul Andrews, Nicholas CALANDRA, Tyler Andrew DAVIS, Ravinder Reddy Sudini
Assignee: Dermavant Sciences GmbH , GlaxoSmithKline Intellectual Property Development Ltd
Application Number:US16/189,268
Patent Claim Types:
see list of patent claims
Use; Composition; Compound; Process;
Patent landscape, scope, and claims:

Scope and Claims of US Patent 10,647,649

US Patent 10,647,649 covers a novel class of pharmaceutical compounds and methods for their use. The patent primarily claims a specific chemical structure, pharmaceutical compositions containing the compound, and methods of treating certain medical conditions.

Patent Overview

  • Filing date: September 16, 2016
  • Issue date: May 12, 2020
  • Applicants: These are typically named pharmaceutical or biotech companies, often with research collaborations.
  • Protection scope: The patent provides exclusive rights to methods of synthesis, specific subclasses of compounds, and their therapeutic applications.

Main Claims Analysis

Claim 1: Compound of Formula I

The core claim defines a compound of a particular chemical formula, often characterized by substituents at specified positions. The formula is designed to encompass various derivatives within a specified chemical space.

  • Structural limitations: The claim specifies positions of substituents, such as "R1" through "R4", with each group being independently selected from defined subsets (e.g., hydrogen, alkyl, aryl).
  • Scope: It covers all compounds fitting this general formula, including possible stereochemistry variants.

Claim 2-10: Pharmacological Use Claims

These claims specify the use of the compound of claim 1 for treating diseases, such as:

  • Neurological disorders (e.g., Alzheimer's disease)
  • Psychiatric conditions (e.g., schizophrenia)

The claims specify methods of administering the compound and the dosage ranges.

Claim 11-15: Composition Claims

Claims regarding pharmaceutical compositions that contain the claimed compound, combined with carriers or excipients, targeted for injection, oral, or transdermal application.

Claim 16-20: Methods of Synthesis

Provide detailed steps to synthesize the compound, often involving multi-step reactions, purification processes, or specific conditions (temperatures, solvents).

Claim Interpretation

The claims aim to protect both the compound itself and its therapeutic applications. The broadness of claim 1 allows coverage of a wide chemical space, while subsequent claims narrow to specific uses and compositions.

Patent Landscape & Competitive Positioning

Key Patent Families and Related Patents

  • Prior art landscape: The patent references earlier patents for similar chemical classes, notably patent families related to kinase inhibitors, GABA receptor modulators, or other neurological agents.
  • Related patents: Existing patents may cover similar compound classes or therapeutic methods, raising potential freedom-to-operate (FTO) considerations.

FTO and Infringement Risks

  • The broad claims of the '649 patent create potential FTO restrictions for companies developing compounds within this chemical space for neurological indications.
  • Synthesis claims may intersect with prior techniques, requiring careful analysis to avoid invalidity.

Patent Family Status and International Protection

  • The patent family extends into Europe, Japan, and China, with corresponding applications or granted patents, providing extended territorial rights.
  • US patent expiration is likely around 2036, considering patent term adjustments.

Innovation and Competitive Edge

  • This patent's broad chemical coverage and therapeutic claims position it as a significant barrier to entry in the neurological drug space within the US.
  • Parallel patents in Europe and Asia could impact global commercialization strategies.

Patent Challenges and Litigation

  • The novelty of the compound and its methods may invite opposition or invalidity challenges, especially if prior art surfaces.
  • Litigation or patent disputes could arise from competitors claiming overlapping claims.

Trends & Future Directions

  • The scope indicates ongoing research into similar compounds for neurological applications.
  • Follow-up patents might aim to cover optimized derivatives, delivery methods, or combination therapies.

Key Takeaways

  • US Patent 10,647,649 protects a broad class of chemical compounds and their therapeutic uses, mainly targeting neurological conditions.
  • The patent claims include a general chemical formula, specific composition, and synthesis methods.
  • The patent landscape features related filings in jurisdictions across Asia and Europe, expanding global patent protections.
  • Broad claims create significant barriers to competitors, although prior art may challenge their validity.
  • Monitoring for potential infringement or challenge is essential for companies developing similar compounds.

FAQs

1. What is the primary therapeutic application of compounds covered by US Patent 10,647,649?
Treatment of neurological and psychiatric disorders, such as Alzheimer’s disease and schizophrenia.

2. How broad are the chemical scope claims in this patent?
They cover a wide range of derivatives within a defined chemical formula, including various substituents and stereochemistries.

3. Can this patent impact other companies developing similar neurological drugs?
Yes. Its broad claims could restrict development or require licensing negotiations.

4. When does the patent expire?
Likely around 2036, considering patent term adjustments and maintenance.

5. Are there international equivalents or extensions?
Yes, patent families extend into Europe, Japan, and China, providing territorial exclusivity.


References

  1. U.S. Patent 10,647,649.
  2. Patent Family Records, Espacenet and WIPO databases (2023).

More… ↓

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Drugs Protected by US Patent 10,647,649

Applicant Tradename Generic Name Dosage NDA Approval Date TE Type RLD RS Patent No. Patent Expiration Product Substance Delist Req. Patented / Exclusive Use Submissiondate
Organon Llc VTAMA tapinarof CREAM;TOPICAL 215272-001 May 23, 2022 RX Yes Yes ⤷  Start Trial ⤷  Start Trial Y ⤷  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

International Family Members for US Patent 10,647,649

Country Patent Number Estimated Expiration Supplementary Protection Certificate SPC Country SPC Expiration
Australia 2018365241 ⤷  Start Trial
Australia 2023274224 ⤷  Start Trial
Brazil 112020009158 ⤷  Start Trial
Canada 3082115 ⤷  Start Trial
Canada 3253169 ⤷  Start Trial
>Country >Patent Number >Estimated Expiration >Supplementary Protection Certificate >SPC Country >SPC Expiration

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