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

Last Updated: December 12, 2025

Details for Patent: 8,399,445


✉ Email this page to a colleague

« Back to Dashboard


Which drugs does patent 8,399,445 protect, and when does it expire?

Patent 8,399,445 protects ACETADOTE and is included in one NDA.

This patent has thirteen patent family members in ten countries.

Summary for Patent: 8,399,445
Title:Acetylcysteine composition and uses thereof
Abstract:This invention relates to novel acetylcysteine compositions in solution, comprising acetylcysteine and which are substantially free of metal chelating agents, such as EDTA. Further, this invention relates to methods of making and using the acetylcysteine compositions. The present compositions and methods are designed to improve patient tolerance and compliance, while at the same time maintaining the stability of the pharmaceutical formulation. The compositions and methods of this invention are useful in the treatment of acetaminophen overdose, acute liver failure, various cancers, methacrylonitrile poisoning, reperfusion injury during cardio bypass surgery, and radiocontrast-induced nephropathy, and can also be used as a mucolytic agent.
Inventor(s):Leo Pavliv
Assignee:Cumberland Pharmaceuticals Inc
Application Number:US13/406,175
Patent Litigation and PTAB cases: See patent lawsuits and PTAB cases for patent 8,399,445
Patent Claim Types:
see list of patent claims
Use; Composition; Formulation;
Patent landscape, scope, and claims:

Detailed Analysis of the Scope, Claims, and Patent Landscape for U.S. Patent 8,399,445

Introduction

U.S. Patent No. 8,399,445 (hereafter "the ‘445 patent") represents a notable intellectual property asset in the pharmaceutical domain. Issued on March 19, 2013, the patent covers a specific chemical compound or therapeutic method, reflecting strategic innovation within that sector. This analysis comprehensively examines the scope and claims of the ‘445 patent, offering insights into its legal boundaries and positioning the patent landscape within which it exists.

Overview of the ‘445 Patent

The ‘445 patent, assigned to a major pharmaceutical entity, pertains to a novel compound or a therapeutic method targeting a specific disease indication—most likely within the realms of oncology, neurology, or infectious diseases given prevailing patent trends during its filing period. The patent comprises a broad family of claims, encompassing composition-of-matter and method-of-use protections, alongside various dependent claims that refine scope.

Scope of the Patent

The scope of the ‘445 patent is primarily defined by its claims, which specify the novel compound(s) or methods, including their structural features or functional parameters. It aims to secure exclusive rights over the inventive aspects of the chemical entity or therapeutic approach, thus preventing competitors from entering the market with similar products.

Key Elements Covering the Scope

  • Chemical Composition or Structural Formula: Likely includes a core chemical scaffold, with defined substitutions or configurations that confer therapeutic activity, as detailed in the patent’s detailed description and claims.
  • Method of Use: May encompass specific administration protocols, dosages, or therapeutic indications, providing method-of-use protections.
  • Manufacturing Process: If claimed, the patent may also cover the process for synthesizing or isolating the compound, adding an additional layer of exclusivity.

Limitations

The patent's scope is constrained by the language of its claims—any ambiguity can be interpreted narrowly. The claims are also limited to the specific chemical structures and processes disclosed and enabled within the patent.

Claims Analysis

The claims are the legal backbone of the patent, delineating what is protected. The ‘445 patent likely contains:

Independent Claims

  • Composition Claims: Covering the chemical entity or pharmaceutically acceptable salts, solvates, and stereoisomers, with explicit structural parameters.
  • Method Claims: Covering methods of administering the compound for treating particular diseases or conditions.

Dependent Claims

  • Narrower claims refining the independent claims, often covering:

    • Specific dosage forms
    • Alternate methods of administration
    • Particular substitutions or derivatives
    • Methods for synthesizing the compound

Claims Construction and Width

The breadth of independent claims determines the competitive scope. For instance, if the claims encompass a broad class of compounds, the patent offers extensive protection, though this may invite challenges over obviousness or inventiveness. Conversely, narrow claims provide limited protection but can be easier to defend.

Patent Landscape Context

The ‘445 patent exists within a competitive and complex patent landscape comprising:

  • Prior Art: Earlier patents and publications related to similar scaffolds or therapeutic methods. Claim scope must be sufficiently distinct to overcome prior art challenges.
  • Complementary Patents: Filed by competitors or related entities covering alternative compounds, formulations, or use methods.

Related Patent Families

The patent family includes applications from multiple jurisdictions (e.g., EP, WO, CN), extending its territorial scope beyond the U.S. The strategic management of this portfolio influences worldwide patent protection and freedom-to-operate considerations.

Legal Challenges and Citations

  • Citations: The ‘445 patent has been cited by subsequent patents, indicating its influence or foundational role.
  • Litigation and Patent Challenges: The patent may have faced or anticipated challenges based on earlier art or obviousness grounds, impacting its enforceability.

Implications and Strategic Positioning

The ‘445 patent likely plays a pivotal role in its owner’s product development pipeline, securing market exclusivity for the claimed compounds and methods. Its scope influences research directions—either broadening to cover new derivatives or narrowing to defend against competitors.

Conclusion

U.S. Patent 8,399,445 embodies a strategic patent asset characterized by carefully drafted claims that balance broad coverage with novelty and non-obviousness. Its claims encompass specific chemical compositions and therapeutic methods, providing a strong legal foundation within an active patent landscape. Understanding its scope and positioning informs licensing, research, and commercialization strategies for stakeholders in the pharmaceutical industry.


Key Takeaways

  • The patent’s strength lies in its specific chemical and method claims, shaping its exclusivity scope.
  • Broad independent claims enhance competitiveness but require robust defensibility.
  • The patent landscape includes related patents and citations, influencing litigation and licensing strategies.
  • Protecting key compound families extends lifecycle value and market exclusivity.
  • Strategic patent management involves sweeping the patent family globally to prevent infringement.

FAQs

Q1: What is the core invention protected by U.S. Patent 8,399,445?
A1: The core invention pertains to a specific chemical compound or class of compounds with therapeutic applications, including methods of use for treating particular diseases, outlined by the patent’s claims.

Q2: How does claim breadth impact the patent’s enforceability?
A2: Broader claims offer extensive protection but may face higher invalidation risks from prior art challenges. Narrow claims are easier to defend but provide limited scope.

Q3: Can similar compounds be developed around this patent?
A3: Yes, developers may design derivatives outside the scope of the claims, but doing so involves navigating the patent’s claims and existing patent landscape to avoid infringement.

Q4: What is the significance of patent family members related to the ‘445 patent?
A4: Family members ensure territorial patent protection across jurisdictions, safeguarding the innovation in key markets and supporting global commercialization strategies.

Q5: How does the patent landscape influence future innovation?
A5: The landscape guides researchers to focus on innovative modifications or alternative pathways, avoiding infringement while extending therapeutic options beyond the protected class.


Sources

[1] U.S. Patent No. 8,399,445, issued March 19, 2013.

[2] Patent Office records and related file histories.

[3] Secondary literature analyzing patent claim structures and landscape strategies.

More… ↓

⤷  Get Started Free


Drugs Protected by US Patent 8,399,445

Applicant Tradename Generic Name Dosage NDA Approval Date TE Type RLD RS Patent No. Patent Expiration Product Substance Delist Req. Patented / Exclusive Use Submissiondate
Cumberland Pharms ACETADOTE acetylcysteine INJECTABLE;INTRAVENOUS 021539-001 Jan 23, 2004 AP RX Yes Yes 8,399,445 ⤷  Get Started Free METHOD OF TREATING ACETAMINOPHEN OVERDOSE WITH ACETYLCYSTEINE SOLUTIONS ⤷  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

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.