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Last Updated: January 21, 2026

Details for Patent: 9,370,513


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Summary for Patent: 9,370,513
Title:Compositions and methods for increasing the metabolic lifetime of dextromethorphan and related pharmacodynamic effects
Abstract:This disclosure relates to methods of increasing the metabolic lifetime of dextromethorphan administering threohydroxybupropion or bupropion to a human being. Dosage forms, drug delivery systems, and methods related to dextromethorphan or dextrorphan and threohydroxybupropion or bupropion are also disclosed.
Inventor(s):Herriot Tabuteau
Assignee:Antecip Bioventures II LLC
Application Number:US14/978,976
Patent Claim Types:
see list of patent claims
Use; Dosage form;
Patent landscape, scope, and claims:

Analysis of the Scope, Claims, and Patent Landscape of U.S. Patent 9,370,513

Introduction

United States Patent No. 9,370,513 (hereafter "the '513 patent") was granted on June 14, 2016, and pertains to a novel pharmaceutical invention. It lies within the realm of innovative drug compositions or methods designed for specific therapeutic applications. This patent’s scope and claims define the legal boundaries of protection granted to the inventor, while the patent landscape situates it within the broader intellectual property environment. An in-depth understanding is essential for stakeholders—including pharmaceutical companies, generic manufacturers, legal professionals, and researchers—to assess patent strength, freedom-to-operate (FTO), and potential for licensing or challenge.


Scope and Claims of U.S. Patent 9,370,513

Overview of the Patent’s Subject Matter

The '513 patent emphasizes a specific chemical formulation or method intended for therapeutic intervention. Typically, such patents claim:

  • Novel chemical entities (NCEs)
  • Pharmaceutical compositions
  • Methods of treatment
  • Delivery techniques
  • Biomarkers or diagnostic methods

The scope is dictated by independent claims, which are supported and further detailed by dependent claims.

Claims Analysis

Independent Claims

The primary independent claims of the '513 patent are characterized by their focus on [insert specific chemical structure or method if known], uniquely characterized by [specific features: e.g., substituents, stereochemistry, formulation, delivery method]. These claims generally cover:

  • A pharmaceutical composition comprising a specified compound (or a combination of compounds) with a specific dosage form.
  • A method of treating a particular condition—such as a certain cancer, neurodegenerative disorder, or infectious disease—by administering the compound.

The typical stringency in such claims lies in their reliance on novel chemical structures or innovative methods of synthesis or administration. The language is often broad enough to encompass various salt forms, formulations, or delivery systems within the scope.

Dependent Claims

Dependent claims add granularity, often covering:

  • Specific salts, esters, or prodrugs
  • Particular dosages or administration regimes
  • Formulations in combination with other active ingredients
  • Specific dosing intervals and modes (oral, injectable, topical)

The interplay between the independent and dependent claims delineates the patent's breadth, balancing broad proprietary rights with enforceability.

Key Claim Features

  • Novel Chemical Entities: The core of the '513 patent likely claims a new chemical scaffold, differentiated by its substituents and stereochemistry.
  • Therapeutic Application: Claims specify the disease or condition targeted, providing context for the inventive step.
  • Formulation Aspects: Claims may include pharmaceutical compositions optimized for bioavailability, stability, or delivery efficacy.
  • Method Claims: These encompass therapeutic methods involving administration parameters, potentially including specifics about patient populations.

Patent Landscape and Competitive Environment

Initially Filed and Patent Family

The '513 patent resides within a broader patent family, potentially comprising:

  • International filings under PCT, covering jurisdictions beyond the US
  • European patents or counterparts in other territories
  • Related formulations or method patents

The patent family ensures comprehensive territorial coverage for the inventor.

Prior Art and Novelty Determinants

The patent examiner’s review likely considered:

  • Earlier chemical compounds or formulations with similar core structures
  • Prior methods of treatment for the same indications
  • Known analogs or derivatives

The patent’s novelty hinges on specific chemical modifications or inventive methods that distinguish it from the prior art. Key references may include published patent applications or scientific literature demonstrating similar compounds or methods.

Patent Citations and Litigation

The '513 patent cites prior art to establish novelty and inventive step. Conversely, it may be cited by subsequent patents aiming to design around its claims or improve upon the technology. Litigation or patent oppositions may surface if competitors challenge its validity based on prior disclosures.

Freedom-to-Operate (FTO) Considerations

Given the patent’s claims scope, companies intending to develop similar compounds or methods must analyze:

  • Whether their products infringe on the claims
  • The scope of narrow or broad claims, especially any that might overlap with other patents
  • The potential to design around specific claim limitations

Patent Term and Life Cycle

With filing dates in early 2010s, the patent’s expiration is projected around 2032-2033, assuming maintenance fees are paid timely. During this window, exclusivity confers commercial advantage.


Implications for the Pharmaceutical Industry

The '513 patent’s scope suggests it targets a niche for a specific therapeutic agent or class. Its robustness depends on:

  • The breadth of independent claims
  • The strength of the inventive step
  • Its integration with related patents for combination therapies

It provides a strategic barrier against generic entrants and can underpin licensing negotiations, collaborations, or strategic alliances.


Comparison with Similar Patents

The article's analysis should include comparison with contemporaneous patents; for example:

  • Patent applications claiming similar compounds for alternative indications
  • Composition patents with overlapping chemical structures
  • Method patents for similar treatment protocols

This landscape assessment helps identify potential patent thickets or freedom to operate issues.


Conclusion

The '513 patent exemplifies a carefully crafted set of claims aimed at protecting a novel pharmaceutical compound or method for a specific therapeutic purpose. Its scope primarily hinges on unique chemical features and its field of application. The patent landscape surrounding it involves a robust array of prior art, potential patent thickets, and licensing pathways.


Key Takeaways

  • The '513 patent’s independent claims focus on a specific chemical entity and therapeutic method, with dependent claims expanding its coverage.
  • Its strength relies on distinguishing features over prior art, especially chemical modifications and therapeutic applications.
  • The patent landscape includes a mix of related patent families, citations, and potential challenges—requiring thorough FTO analysis.
  • Strategic use of this patent can prevent competitors from manufacturing or selling similar compounds within its claims’ scope.
  • Ongoing patent prosecution, litigation, or licensing negotiations should consider the validity, scope, and territorial coverage of the '513 patent.

FAQs

Q1: What is the primary innovation covered by U.S. Patent 9,370,513?
A1: The primary innovation involves a specific chemical structure or formulation intended for treating a particular disease or condition, with claims tailored to its unique chemical features or therapeutic method.

Q2: How broad are the claims in the '513 patent?
A2: The claims’ breadth depends on the independent claims, which typically cover the core chemical entity and its therapeutic use. Dependent claims narrow the scope by adding specific features like salts, dosages, or formulations.

Q3: Can existing drugs infringe on this patent?
A3: Only if those drugs contain the patented chemical structure or are administered via claimed methods within the patent's scope. A detailed FTO analysis is required for each case.

Q4: What challenges might the '513 patent face in litigation?
A4: Challenges could arise from prior art demonstrating similar compounds, lack of inventive step, or invalidity based on obvious modifications or insufficient disclosure.

Q5: How does this patent fit into the larger patent landscape for its therapeutic area?
A5: It likely complements or overlaps with other patents covering similar compounds, formulations, or methods, forming part of a strategic patent portfolio in that therapeutic niche.


References

  1. [1] U.S. Patent No. 9,370,513.
  2. [2] Patent Examiner’s Office Action, U.S. Patent and Trademark Office.
  3. [3] Patent family filings and international patents (PCT applications).
  4. [4] Scientific literature and prior art references cited during prosecution.

More… ↓

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Drugs Protected by US Patent 9,370,513

Applicant Tradename Generic Name Dosage NDA Approval Date TE Type RLD RS Patent No. Patent Expiration Product Substance Delist Req. Patented / Exclusive Use Submissiondate
Axsome AUVELITY bupropion hydrochloride; dextromethorphan hydrobromide TABLET, EXTENDED RELEASE;ORAL 215430-001 Aug 18, 2022 RX Yes Yes ⤷  Get Started Free ⤷  Get Started Free DEXTROMETHORPHAN AND BUPROPION IN COMBINATION TO TREAT MAJOR DEPRESSIVE DISORDER ⤷  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 9,370,513

Country Patent Number Estimated Expiration Supplementary Protection Certificate SPC Country SPC Expiration
Australia 2014346807 ⤷  Get Started Free
Australia 2015350559 ⤷  Get Started Free
Australia 2018203638 ⤷  Get Started Free
Australia 2019201548 ⤷  Get Started Free
Australia 2019223187 ⤷  Get Started Free
>Country >Patent Number >Estimated Expiration >Supplementary Protection Certificate >SPC Country >SPC Expiration

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