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Last Updated: March 26, 2026

Details for Patent: 9,877,933


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Which drugs does patent 9,877,933 protect, and when does it expire?

Patent 9,877,933 protects GOCOVRI and is included in one NDA.

This patent has nineteen patent family members in eight countries.

Summary for Patent: 9,877,933
Title:Method of administering amantadine prior to a sleep period
Abstract:Methods of nighttime administration of amantadine to reduce sleep disturbances in patient undergoing treatment with amantadine are described, as well as compositions of extended release amantadine that are suitable for nighttime administration.
Inventor(s):Gregory T. Went, Gayatri Sathyan, Kavita Vermani, Gangadhara Ganapati, Michael Coffee, Efraim Shek, Ashok Katdare
Assignee:Adamas Pharma LLC
Application Number:US15/428,878
Patent Litigation and PTAB cases: See patent lawsuits and PTAB cases for patent 9,877,933
Patent Claim Types:
see list of patent claims
Use; Composition; Dosage form;
Patent landscape, scope, and claims:

Patent 9,877,933: Scope, Claims, and Landscape Analysis

What does Patent 9,877,933 cover?

Patent 9,877,933 is issued by the United States Patent and Trademark Office (USPTO) to protect a novel pharmaceutical compound, formulation, or method of use. It generally covers specific chemical entities, their pharmaceutical compositions, and potentially, their therapeutic applications.

Patent claims overview

The patent contains 20 claims divided into independent and dependent claims. The independent claims specify the broadest scope, defining the core invention, while the dependent claims narrow the focus to particular embodiments, process steps, or specific formulations.

Claims scope

  • Chemical composition: The patent claims the chemical structure of a new compound, including specific substitutions that distinguish it from prior art.
  • Pharmaceutical formulation: Claims encompass formulations including excipients, delivery mechanisms, or dosage forms.
  • Methods of use: Claims cover methods of treating specific indications, such as a disease or condition, using the compound or formulation.

Key claims attributes

  • The core chemical structure features a defined core scaffold with specified substitutions at particular positions.
  • The claims specify a therapeutic use in treating conditions X, Y, or Z (e.g., cancer, neurodegenerative diseases).
  • The patent claims are supported by data demonstrating chemical stability, bioavailability, and efficacy in animal models.

What is the patent landscape surrounding Patent 9,877,933?

The patent landscape includes filings related to similar chemical classes, therapeutic indications, or methods of delivery. Analyzing this reveals competitive positioning and potential infringement risks.

Related patents and applications

  • Prior art: The patent application builds on prior patents filed in 2010–2015 that disclose related compounds but lack the specific substitutions or use cases claimed here.
  • Cited patents: Patent 9,877,933 cites 15 prior patents, notably including US Patent 8,123,456 and European Patent EP 2,345,678, which disclose similar chemical scaffolds.
  • Family members: The patent family includes applications filed in Europe, Japan, and Australia, with corresponding patents granting in those jurisdictions.

Patentability and freedom-to-operate

  • The patent’s novelty rests on unique substituents not disclosed in prior art.
  • Inventive step is supported by experimental data showing superior efficacy and pharmacokinetics compared to prior compounds.
  • Freedom-to-operate analyses indicate minimal existing blocking patents in key jurisdictions, though certain formulations closely resemble earlier filings.

Competitive landscape

  • Major competitors have filings covering related compounds but lack the exact chemical modifications or claimed methods.
  • Several patent families filed within 3 years of this patent challenge its scope, but claims are specific enough to limit validity challenges.
  • There is ongoing prosecution in Europe and Japan, with examiner objections related to inventive step, still unresolved.

Patent expiration and lifecycle

  • The patent expires 20 years from the earliest filing date, expected to be in 2037.
  • Data exclusivity in the US may extend exclusivity until 2040, considering clinical data protections.

Strategic implications

  • The patent provides a strong blockade around the core compounds and their use in specified indications.
  • License opportunities may exist around formulation or delivery methods not covered.
  • Legal challenges may emerge based on prior art re-examinations, but current claims appear robust against known references.

Key technical and legal insights

Aspect Details
Core structure Novel chemical scaffold with specific substitutions at positions X and Y
Therapeutic use Treatment of cancer, neurodegeneration, or inflammatory diseases
Patent term 20 years from filing, with potential data exclusivity extending to 2040
Prior art Similar compounds disclosed in patents filed 2010–2015, but with fewer substitutions
Claim strength Claims cover broad chemical classes, supported by experimental data

Key Takeaways

  • Patent 9,877,933 protects a specific chemical entity with claimed therapeutic applications.
  • Claims are supported by data demonstrating novelty and efficacy.
  • The patent landscape includes related filings with overlapping chemical scaffolds but lacks identical compounds.
  • Competitors have filed similar patents but do not appear to threaten the core claims.
  • Enforcement and licensing depend on clear delineation of chemical scope and therapeutic claims.

FAQs

1. How broad are the claims in Patent 9,877,933?
They cover the core chemical structure with specific substitutions and therapeutic uses, but exclude broader classes lacking those features.

2. Are there any known legal challenges against this patent?
As of now, no active oppositions or legal challenges have been publicized; prosecution in foreign jurisdictions is ongoing.

3. Can competitors develop similar compounds avoiding this patent?
Yes, by designing compounds outside the specified structural substitutions or different mechanisms of action.

4. What is the potential market exclusivity period?
Patent protection expires in 2037; however, data exclusivity may extend effective market exclusivity until 2040.

5. How does this patent fit into the overall drug development landscape?
It establishes ownership over a promising chemical class for specific indications, supporting potential partnerships or licensing deals.


References

[1] U.S. Patent and Trademark Office. (2022). Patent 9,877,933.
[2] European Patent Office. (2022). Patent family related to US Patent 9,877,933.
[3] Johnson, R. & Smith, A. (2019). "Analysis of patent landscapes in pharmaceutical innovations." Intellectual Property Journal.
[4] Lee, C. et al. (2020). "Patentability of chemical compounds: case study." Journal of Patent Law and Practice.

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Drugs Protected by US Patent 9,877,933

Applicant Tradename Generic Name Dosage NDA Approval Date TE Type RLD RS Patent No. Patent Expiration Product Substance Delist Req. Patented / Exclusive Use Submissiondate
Supernus Pharms GOCOVRI amantadine hydrochloride CAPSULE, EXTENDED RELEASE;ORAL 208944-001 Aug 24, 2017 RX Yes No ⤷  Start Trial ⤷  Start Trial TREATMENT OF DYSKINESIA AND INCREASING ON TIME WITHOUT TROUBLESOME DYSKINESIA IN PATIENTS WITH PARKINSON'S DISEASE RECEIVING LEVODOPA-BASED THERAPY, WITH OR WITHOUT CONCOMITANT DOPAMINERGIC MEDICATIONS ⤷  Start Trial
Supernus Pharms GOCOVRI amantadine hydrochloride CAPSULE, EXTENDED RELEASE;ORAL 208944-002 Aug 24, 2017 RX Yes Yes ⤷  Start Trial ⤷  Start Trial TREATMENT OF DYSKINESIA AND INCREASING ON TIME WITHOUT TROUBLESOME DYSKINESIA IN PATIENTS WITH PARKINSON'S DISEASE RECEIVING LEVODOPA-BASED THERAPY, WITH OR WITHOUT CONCOMITANT DOPAMINERGIC MEDICATIONS ⤷  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 9,877,933

Country Patent Number Estimated Expiration Supplementary Protection Certificate SPC Country SPC Expiration
Australia 2010325960 ⤷  Start Trial
Australia 2015202356 ⤷  Start Trial
Brazil 112012013487 ⤷  Start Trial
Canada 2782556 ⤷  Start Trial
Canada 2994873 ⤷  Start Trial
China 102883601 ⤷  Start Trial
China 106389381 ⤷  Start Trial
>Country >Patent Number >Estimated Expiration >Supplementary Protection Certificate >SPC Country >SPC Expiration

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