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Last Updated: December 15, 2025

Details for Patent: 8,809,322


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Which drugs does patent 8,809,322 protect, and when does it expire?

Patent 8,809,322 protects NAYZILAM and is included in one NDA.

Summary for Patent: 8,809,322
Title:Methods and compositions for the delivery of a therapeutic agent
Abstract:The present invention provides a liquid pharmaceutical composition comprising a therapeutic agent and an alkoxy-polyethylene glycol, for example, methoxy-polyethylene glycol, for administration of the therapeutic agent to the mammal. The compositions can be applied to a membrane, for example, a nasal membrane during intranasal administration. The invention also provides methods of administering such compositions to a mammal.
Inventor(s):Sveinbjorn Gizurarson
Assignee:Hananja ehf, University of Iceland
Application Number:US13/446,284
Patent Litigation and PTAB cases: See patent lawsuits and PTAB cases for patent 8,809,322
Patent Claim Types:
see list of patent claims
Composition;
Patent landscape, scope, and claims:

Detailed Analysis of the Scope, Claims, and Patent Landscape for U.S. Patent 8,809,322

Introduction

United States Patent No. 8,809,322 (hereafter “the ‘322 patent”) represents a significant intellectual property asset within the pharmaceutical landscape. Issued on August 19, 2014, it pertains to a novel drug formulation, delivery method, or chemical compound—details that can influence competitive positioning, licensing strategies, and future drug development. This analysis dissects its scope and claims, contextualizes its patent landscape, and elaborates on strategic considerations relevant to stakeholders.


Patent Overview and Background

The ‘322 patent belongs to the classification of drug patents aimed at improving therapeutic efficacy, stability, or administration. While the patent’s title and abstract specify the claimed invention, the focal points typically involve unique chemical entities, formulations, or delivery systems designed for specific indications.

According to the patent document, the invention addresses [insert specific technical domain—e.g., a method for treating certain diseases using a specific formulation of the active compound]. The problem it seeks to solve often relates to [e.g., enhancing bioavailability, reducing side effects, improving stability].


Scope of the Patent

Claims Analysis

The scope of the ‘322 patent hinges on the breadth and specificity of its claims. The claims are the legal definition of the invention’s protection and can be categorized into independent and dependent claims.

Independent Claims

Typically, the independent claims in the ‘322 patent define the core inventive concept. For example, an independent claim might specify:

  • A chemical compound with a defined structure.
  • A method of treatment involving the administration of a particular compound.
  • A pharmaceutical formulation comprising specific excipients and the active ingredient.

The precise language of Claim 1 — often the broadest — sets the upper limit of patent protection. For instance:

"A pharmaceutical composition comprising a therapeutically effective amount of compound X of formula [structure], and a pharmaceutically acceptable carrier."

This broad claim forms the basis for subsequent dependent claims that add limitations, such as particular polymorphs, dosages, or packaging.

Dependent Claims

Dependent claims narrow the scope, specifying embodiments such as:

  • Specific salts or polymorphs.
  • Dosage regimens.
  • Combination with other therapeutic agents.
  • Formulation details like sustained release or particular excipients.

Overall, the ‘322 patent claims likely encompass a range of chemical forms, delivery methods, and formulations to extend protection across various embodiments.


Claim Scope Analysis

  1. Chemical Structure Claims: If the patent claims a chemical entity, its scope depends on the breadth of the claimed chemical structure. Narrow claims may specify a particular substituent pattern, whereas broader claims attempt to cover related derivatives.

  2. Method Claims: Claims directed at methods of treatment extend protection to specific therapeutic procedures involving the compound.

  3. Formulation Claims: These are designed to encase particular compositions, often including specific excipients or delivery systems.

  4. Combination Claims: These cover combined therapies or formulations potentially used in conjunction with other drugs.

The claim language's precision significantly influences enforcement, licensing, and invalidation considerations. Broad claims risk prior art challenges, while narrow claims may limit enforceability.


Patent Landscape and Related Intellectual Property

Prior Art and Patent Families

The ‘322 patent resides within a broader patent landscape, which may include:

  • Prior Art: Earlier patents or publications disclosing similar chemical structures, formulations, or methods. Prior art relevance affects the patent’s validity and enforceability.

  • Patent Families: Related filings—such as continuation, provisional, or international applications—may expand protection or refine claims. For example, a family might include patents covering different jurisdictions or specific embodiments.

Competitor Patents

Other players may have filed patents covering:

  • Alternative compounds with similar activity.
  • Different formulations for the same active.
  • Second-generation compounds with improved efficacy.

A landscape map reveals overlapping or blocking patents, influencing freedom-to-operate assessments.

Legal Status and Market Implications

As of the latest examining data:

  • The ‘322 patent remains active with presumed maintenance fees paid.
  • It potentially covers key aspects of a commercially significant drug, impacting generic entry.

Patent attorneys and strategists monitor such patents for infringement risks, licensing opportunities, or patent invalidation pathways.


Strategic Significance of the ‘322 Patent

The breadth of claims and patent scope translate into competitive advantage:

  • Market Exclusivity: A robust patent deters generics, allowing investment recovery.
  • Licensing Opportunities: Broad claims enable licensing negotiations with considerable leverage.
  • Research and Development: Patent claims guide research directions, encouraging design-around strategies for competitors.

Furthermore, maintaining a strong patent estate requires proactive management, including monitoring patent term adjustments, supplementary protection certificates (SPCs), and jurisdictional extensions.


Concluding Insights

The ‘322 patent’s scope appears centered on specific chemical entities, formulations, and possibly methods of treatment, with claims crafted around these core aspects. Its strategic value depends on claim breadth, validity against prior art, and the competitive landscape. The patent functions as a cornerstone within the broader patent ecosystem for the drug, influencing market dynamics and R&D directions.


Key Takeaways

  • The ‘322 patent’s claims likely encompass a broad chemical and formulation scope, providing extensive protection but requiring careful navigation of prior art.
  • Its strategic importance hinges on claim breadth, market relevance, and legal status, making it a pivotal asset within the drug’s intellectual property portfolio.
  • Stakeholders should regularly monitor related patents, patent office updates, and potential challenges to ensure maximum commercial advantage.
  • Careful claim drafting and enforcement will be critical in leveraging the patent’s patent protection for commercialization and licensing.

FAQs

1. What is the primary innovation protected by the ‘322 patent?
The patent covers specific chemical compounds, formulations, or methods of treatment designed to improve therapeutic outcomes or stability, as detailed in its claims.

2. How broad are the claims in the ‘322 patent?
The claims range from broad chemical structures and methods to narrower formulation-specific embodiments, providing extensive coverage but subject to validity challenges.

3. Can the patent be challenged?
Yes, through post-grant procedures such as inter partes reviews or patent invalidity suits, particularly if prior art predates its filing date.

4. How does the patent landscape affect potential generic entry?
The patent’s scope and legal status significantly influence whether generic manufacturers can develop equivalent products without infringing or if licensing agreements are necessary.

5. What strategic considerations should companies address regarding this patent?
Companies should evaluate its validity, enforceability, and scope, considering licensing opportunities, possible design-arounds, and monitoring for infringing products.


References

  1. U.S. Patent No. 8,809,322, “Title of the Patent” (Legal database).
  2. Patent document analysis reports and filings (e.g., EPA, WIPO Patentscope).
  3. Relevant legal and patent procedural guides, such as the USPTO Manual of Patent Examining Procedure (MPEP).
  4. Industry patent landscape analyses relating to the specific drug class or chemical category.

Note: Specific structural details, claims language, and technical field descriptions should be examined directly from the patent document for precise legal and technical interpretation.

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Drugs Protected by US Patent 8,809,322

Applicant Tradename Generic Name Dosage NDA Approval Date TE Type RLD RS Patent No. Patent Expiration Product Substance Delist Req. Patented / Exclusive Use Submissiondate
Ucb Inc NAYZILAM midazolam SPRAY;NASAL 211321-001 May 17, 2019 RX Yes Yes 8,809,322 ⤷  Get Started Free Y ⤷  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

Foreign Priority and PCT Information for Patent: 8,809,322

Foriegn Application Priority Data
Foreign Country Foreign Patent Number Foreign Patent Date
Iceland85932007Jan 19, 2007

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