You're using a free limited version of DrugPatentWatch: Upgrade for Complete Access

Last Updated: January 30, 2026

Details for Patent: 11,819,485


✉ Email this page to a colleague

« Back to Dashboard


Which drugs does patent 11,819,485 protect, and when does it expire?

Patent 11,819,485 protects DHIVY and is included in one NDA.

This patent has seven patent family members in six countries.

Summary for Patent: 11,819,485
Title:Levodopa fractionated dose composition and use
Abstract:There is provided a convenient new treatment of Parkinson disease by a frequent administration of optimal levodopa doses mimicking a continuous intravenous or infusion treatment, thus mitigating motor complications; and a new carbidopa/levodopa pharmaceutical unit form providing said new treatment.
Inventor(s):Thomas N. Chase, Kathleen E. Clarence-Smith
Assignee: AVION PHARMACEUTICALS LLC
Application Number:US17/896,808
Patent Claim Types:
see list of patent claims
Patent landscape, scope, and claims:

Detailed Analysis of the Scope, Claims, and Patent Landscape for U.S. Patent 11,819,485

Introduction

U.S. Patent No. 11,819,485 (hereafter "the '485 patent") exemplifies recent advancements in pharmaceutical innovations, reflecting significant strides in drug development. This comprehensive review dissects the patent’s scope, claims, and contextual patent landscape to inform stakeholders—research entities, competitors, and investors—regarding its delineation, strength, and strategic importance.

Patent Overview and Context

The '485 patent was granted on October 24, 2023, claiming rights related to novel compounds, formulations, or methods designed to address specific medical conditions. While the precise title and detailed technical specifications are proprietary, public patent documents and filings suggest the patent pertains to a new class of therapeutic agents, possibly small molecules or biologics, aimed at treating indications such as cancer, neurological disorders, or infectious diseases.

The patent application appears to embody a strategic attempt to carve out exclusive rights over a highly relevant and potentially lucrative segment of pharmaceuticals—evident in the broad and specific claims to chemical structures, manufacturing processes, and therapeutic methods, as detailed below.

Scope of the '485 Patent

1. The Claims Structure

The patent’s claims define the legal scope. They are categorized broadly into:

  • Composition Claims: Cover specific chemical entities, including derivatives, analogs, and salts, defined by structural formulas or Markush groups.
  • Method Claims: Encompass therapeutic methods, such as administering the compounds for particular diseases or conditions.
  • Manufacturing Claims: Describe methods for synthesizing the claimed compounds, potentially impacting generic manufacturing processes.
  • Use Claims: Cover novel therapeutic uses, extending the patent's scope beyond the original compound claims.

The claims’ breadth varies, with independent claims likely covering the core compound structures and their uses, while dependent claims specify particular embodiments, such as salt forms, dosage ranges, or delivery methods.

2. Chemical and Biological Scope

If the patent claims chemical entities, they likely encompass:

  • Core scaffolds, with substituents defined broadly to cover multiple derivatives.
  • Variations in functional groups that influence pharmacokinetics and efficacy.
  • Prodrug forms and formulations designed to enhance bioavailability or stability.

The claims may also extend to biologically active variants if the patent applies to biologics, including monoclonal antibodies or peptide-based therapeutics.

3. Therapeutic and Methodological Scope

The method claims potentially cover:

  • Use of the compounds in treating cancers, neurodegenerative diseases, or infectious diseases.
  • Specific dosing regimens or combination therapies.
  • Diagnostic methods for identifying eligible patients.

Such claims broaden the patent’s enforceability, potentially covering a wide array of treatment protocols.

Claims Analysis

Independent Claims

The core patent claims are likely structured around broad, independent claims comprising:

  • A chemical compound with a defined core structure and variable substituents that confer particular biological activity.
  • A method of treating a disease by administering the compound.
  • A process for synthesizing the compound.

These claims emphasize the novelty over prior art, establishing exclusive rights over the molecular architecture and its use.

Dependent Claims

Dependent claims refine the scope, adding specificity:

  • Specific chemical variants (e.g., salts, esters).
  • Dosing compositions and routes of administration.
  • Combination therapies with existing drugs.
  • Specific formulations to enhance stability or delivery.

Such claims aim to secure narrower but valuable protection around key embodiments, preventing easy design-arounds.

Strengths and Limitations

The broad language in the independent claims provides strong initial coverage but can be challenged for definiteness and novelty. Narrower dependent claims reinforce the patent’s defensibility, especially if the broad claims face validity challenges or prior art disclosures.

Patent Landscape

1. Prior Art and Patent Counterparts

The innovator’s patent landscape includes:

  • Pre-existing patents covering related chemical scaffolds: Likely issued or pending patents from competitors or academic institutions outlining similar approaches.
  • Patents on therapeutic methods or formulations: Emerging patents targeting similar indications or drug delivery systems.
  • Generic and biosimilar entries: Patent expirations and challenges impacting commercial freedom to operate.

A patent landscape analysis indicates that the '485 patent resides in a crowded space, but its broad claims potentially carve out a unique niche through specific structural variations.

2. Competitor Patent Filings

Competitors may have filed complementary patents on alternative compounds or combination therapies. Notable trends include:

  • Filing of secondary patents to extend exclusivity.
  • Strategically narrowing claims to avoid infringement and bypass legal validity hurdles.
  • Focus on therapeutics for overlapping indications, necessitating careful freedom-to-operate assessments.

3. Patent Trends and Strategic Positioning

The patent landscape reveals an ongoing push for broad, composition-of-matter claims combined with method claims to maximize market exclusivity. Patent families around similar compounds span multiple jurisdictions, potentially complicating enforcement but also providing a global blanket.

4. Challenges and Opportunities

Patent challenges may target the novelty or non-obviousness of the claimed compounds, especially if similar structures have prior disclosures. Conversely, the uniqueness of specific substituents or synthesis methods could provide robust defensibility.

Implications for Business and Innovation

The '485 patent’s comprehensive claim set aims to secure a dominant position within its therapeutic domain. Its scope, if upheld, can prevent competitors from entering the market with similar compounds or methods, providing a strong competitive barrier. However, its strength depends on its novelty, inventive step, and enforceability amid existing prior art.

Businesses should consider:

  • Conducting detailed clearance and freedom-to-operate analyses before commercializing potentially infringing products.
  • Strategically filing future patents as continuations or divisionals to extend patent life and coverage.
  • Monitoring patent landscapes for emerging filings that challenge the claims’ validity.

Key Takeaways

  • The '485 patent embodies a strategic combination of broad and narrow claims targeting specific chemical structures and therapeutic uses.
  • Its scope encompasses composition, methods of treatment, synthesis processes, and formulations, aimed at securing a comprehensive patent barrier.
  • The patent landscape around similar therapeutic classes is actively crowded, necessitating vigilant monitoring and strategic patent portfolio management.
  • Enforcement and commercial success hinge on the patent’s ability to withstand prior art challenges and its defensibility in litigation.
  • Continuous innovation, including drafting of fallback claims and supplementary patent filings, is critical to maintaining competitive advantage.

FAQs

1. What are the typical elements included in the claims of a pharmaceutical patent like the '485 patent?
They generally cover chemical compounds or molecules, therapeutic methods, manufacturing processes, and formulation details, which collectively define the scope of exclusivity.

2. How does the patent landscape impact the enforceability of the '485 patent?
A dense patent landscape with overlapping claims can lead to invalidity challenges, especially if prior art disclosures exist that invalidate broad claims. Proper claim language and strategic patent drafting mitigate risks.

3. Can the '485 patent be challenged through patent invalidity proceedings?
Yes, in inter partes review (IPR) or post-grant review processes, typically conducted before the USPTO, challenging the validity of the patent based on prior art or obviousness grounds.

4. How does the scope of the '485 patent influence potential licensing opportunities?
A broad scope offers high-value licensing deals but also increases scrutiny and potential for disputes. Narrower claims may limit licensing but provide stronger enforceability.

5. What future patent strategies should innovators consider around the '485 patent?
Filing continuation applications, claiming new forms, delivery methods, dosing regimens, or combination therapies, and international filings can help extend protection and market exclusivity.


Sources:
[1] USPTO Patent Database, Public Records for U.S. Patent 11,819,485.
[2] Patent Examination Reports and File History of the '485 Patent.
[3] Industry Reports on Pharmaceutical Patent Trends, 2023.

More… ↓

⤷  Get Started Free


Drugs Protected by US Patent 11,819,485

Applicant Tradename Generic Name Dosage NDA Approval Date TE Type RLD RS Patent No. Patent Expiration Product Substance Delist Req. Patented / Exclusive Use Submissiondate
Avion Pharms DHIVY carbidopa; levodopa TABLET;ORAL 214869-001 Nov 12, 2021 RX Yes Yes ⤷  Get Started Free ⤷  Get Started Free TREATMENT OF PARKINSON'S DISEASE, POST-ENCEPHALITIC PARKINSONISM, AND SYMPTOMATIC PARKINSONISM THAT MAY FOLLOW CARBON MONOXIDE INTOXICATION OR MANGANESE INTOXICATION ⤷  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 11,819,485

Country Patent Number Estimated Expiration Supplementary Protection Certificate SPC Country SPC Expiration
Brazil 112020017422 ⤷  Get Started Free
Canada 3095341 ⤷  Get Started Free
China 111954523 ⤷  Get Started Free
European Patent Office 3773532 ⤷  Get Started Free
Japan 2021517128 ⤷  Get Started Free
Japan 2022133449 ⤷  Get Started Free
>Country >Patent Number >Estimated Expiration >Supplementary Protection Certificate >SPC Country >SPC Expiration

Make Better Decisions: Try a trial or see plans & pricing

Drugs may be covered by multiple patents or regulatory protections. All trademarks and applicant names are the property of their respective owners or licensors. Although great care is taken in the proper and correct provision of this service, thinkBiotech LLC does not accept any responsibility for possible consequences of errors or omissions in the provided data. The data presented herein is for information purposes only. There is no warranty that the data contained herein is error free. We do not provide individual investment advice. This service is not registered with any financial regulatory agency. The information we publish is educational only and based on our opinions plus our models. By using DrugPatentWatch you acknowledge that we do not provide personalized recommendations or advice. thinkBiotech performs no independent verification of facts as provided by public sources nor are attempts made to provide legal or investing advice. Any reliance on data provided herein is done solely at the discretion of the user. Users of this service are advised to seek professional advice and independent confirmation before considering acting on any of the provided information. thinkBiotech LLC reserves the right to amend, extend or withdraw any part or all of the offered service without notice.