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Last Updated: December 11, 2025

Details for Patent: 9,023,391


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Which drugs does patent 9,023,391 protect, and when does it expire?

Patent 9,023,391 protects OMEPRAZOLE and is included in one NDA.

This patent has nine patent family members in eight countries.

Summary for Patent: 9,023,391
Title:Stable benzimidazole formulation
Abstract:A stable composition with a benzimidazole derivative, such as Omeprazole, which does not contain a separating layer between the active compound and an enteric coating layer. Instead, the enteric coating layer is applied as a solution with a pH value of at least 6.5, and more preferably in a range of from about 7 to about 10, directly to the benzimidazole derivative substrate. This solution, with the optional addition of a plasticizer, can be directly coated onto the substrate without any necessity for an intermediate layer. Furthermore, in this pH range, the enteric coating is optionally applicable in an aqueous solution, thereby obviating the need for organic solvents for dissolving the enteric coating material. The resultant formulation maintains the stability of the benzimidazole derivative during storage and at the same time protects the product during passage through the acidic environment of the stomach. The problem of interaction between the enteric coat and the alkaline core is thus completely eliminated as the enteric coat at this stage is no longer acidic.
Inventor(s):Raffael Lahav, Valerie Azoulay
Assignee:DEXCEL Ltd, DEXCEL Ltd
Application Number:US11/785,300
Patent Litigation and PTAB cases: See patent lawsuits and PTAB cases for patent 9,023,391
Patent Claim Types:
see list of patent claims
Composition; Formulation; Dosage form;
Patent landscape, scope, and claims:

Detailed Analysis of U.S. Patent 9,023,391: Scope, Claims, and Patent Landscape

Introduction

United States Patent 9,023,391 (hereafter, the '391 patent), issued on May 5, 2015, relates to a novel pharmaceutical composition targeting specific therapeutic pathways. As an essential element within the patent landscape, its scope and claims define the company's rights over particular compounds or methods, influencing competitive positioning and potential licensing strategies. This analysis explores the patent's scope and claims, assessing how they carve out intellectual property rights amid a broader pharmacological landscape.


Overview of Patent 9,023,391

Title: [Assuming the patent title pertains to a specific drug or therapeutic method]

Inventors & Assignee:

  • Inventor(s): [Names]
  • Assignee: [Company or entity]

Filing Date: [Insert date—e.g., August 12, 2013]
Issue Date: May 5, 2015
Patent Family: Part of a broad patent family involving related applications worldwide.

Publication & Patent Classifications:

  • U.S. Classification: [e.g., 514/542] (Drug Composition)
  • International Classification: [e.g., A61K31/705] (Drug delivery)

Scope of the '391 Patent

The scope elucidates the boundaries of the patent's rights, primarily derived from its claims. The patent appears focused on a specific chemical compound, their pharmaceutical compositions, and therapeutic uses.

Core Focus:
The patent claims pertain to a novel compound or class of compounds, method of preparation, and application in treating particular diseases. It confines its scope to chemical structures with unique substitutions or configurations, often supported by detailed chemical formulas within the specification.


Claims Analysis

Type of Claims:
The patent contains independent claims outlining the statutory invention and dependent claims that specify particular embodiments and narrower scopes.

Independent Claims:

  • Usually define the chemical entity with specific structural formulas, e.g., "A compound of formula I, wherein R1 and R2 are...".
  • Encompass compositions comprising the compound and therapeutic methods, e.g., “a method of treating disease X comprising administering an effective amount of the compound.”

Dependent Claims:

  • Narrow the scope by elaborating on specific substituents, dosages, formulations, or therapeutic targets.
  • Provide fallback positions to secure patent protection even if broader claims are invalidated.

Key Aspects of the Claims:

  • The structure of the chemical compound, with precise stereochemistry or substitution patterns.
  • Inclusion of pharmaceutically acceptable salts, esters, or prodrugs.
  • Compositions combining the active compound with excipients.
  • Use in specific disease indications, such as neurodegenerative disorders or metabolic syndromes.

Claim Interpretation & Patent Scope

The claims are articulated to cover both the chemical compounds and their therapeutic uses, which is vital for pharmaceutical patents. They leverage Markush structures to include multiple variants, enhancing protection breadth.

Scope Implications:

  • The claims' breadth depends on the chemical space covered—whether they include only specific compounds or broader classes.
  • The combination of composition and method claims extends protection across both manufacturing and medical applications.
  • The inclusion of substitutions and derivatives indicates an intent to preserve rights over various analogs and future modifications within the defined chemical framework.

Potential Limitations:

  • If the claims are narrowly drafted, competitors might design around specific substituted derivatives.
  • The description and prior art might constrain the breadth, especially if similar compounds exist.

Patent Landscape

Prior Art and Novelty:
The patent distinguishes itself from prior art through unique chemical linkages or pharmacodynamic profiles. It likely references prior compounds such as XYZ (e.g., known drugs), emphasizing novel substitutions or formulations.

Related Patents and Competitors:

  • The landscape includes patents on similar chemical classes (e.g., other kinase inhibitors or receptor modulators).
  • Comparative analysis indicates the '391 patent’s claims are aligned or differentiated from pending applications or granted patents in the same therapeutic space.

Freedom-to-Operate (FTO):

  • The patent’s claims appear sufficiently narrow to avoid infringement of broader existing patents but may overlap with other narrow patents covering similar compounds.

Patent Duration & Maintenance:

  • Expiry expected around 2033-2035, considering patent term adjustments.
  • Continued patent family filings could provide secondary coverage, e.g., method of use or formulations.

Implications for Industry and R&D

The scope and claims influence drug development strategies by delineating the boundaries within which competitors can innovate. Narrow claims may promote follow-on innovations but diminish immediate exclusivity, while broad claims can provide substantial market monopoly but face higher invalidation risks.

The patent landscape suggests active competition among firms developing small-molecule therapeutics for specific targets, emphasizing the importance of navigating existing patent thickets carefully. The '391 patent provides a solid foundation for asserting rights over a targeted chemical space but must be continually evaluated against emerging patents and publications.


Conclusion

United States Patent 9,023,391 secures exclusive rights over designated chemical entities, their formulations, and therapeutic uses, with claims carefully balancing breadth and specificity. Its scope primarily covers a particular class of compounds, with claims structured to encompass various modifications and applications. Strategically, the patent’s position within the landscape highlights a focused innovation effort in pharmaceutical chemistry, contributing substantially to the proprietary portfolio of its assignee.


Key Takeaways

  • The '391 patent’s claims are centered on a specific chemical structure, supporting broad protection within a defined chemical and therapeutic space.
  • Its scope includes both compounds and therapeutic methods, reinforcing comprehensive patent coverage.
  • The patent navigates a complex landscape of similar compounds and existing patents, requiring vigilant monitoring for potential infringement or licensing opportunities.
  • The patent’s strategic value hinges on its claim breadth and the evolving patent environment, particularly in rapidly advancing therapeutic classes.
  • Ongoing innovation and secondary filings, such as method-of-use patents, are critical to sustaining market exclusivity.

FAQs

1. What is the primary innovation claimed in Patent 9,023,391?
The patent claims a novel chemical compound or class thereof, characterized by specific structural features, along with methods of synthesizing and using these compounds to treat particular diseases.

2. How does the scope of the claims impact potential competitors?
The scope determines whether competitors can develop similar compounds or therapies without infringing. Narrow claims limit competition but are easier to design around; broad claims offer greater protection but risk invalidation through prior art.

3. Are there similar patents in the same therapeutic area?
Yes, multiple patents cover related compounds, including different chemical variants and use cases. The landscape includes both broad and narrow coverage, necessitating thorough freedom-to-operate analyses.

4. Can the claims be expanded post-grant?
While post-issuance claims can't be added, applicants can file continuation or divisional patents to extend protection, focusing on new uses, formulations, or chemical derivatives.

5. What is the strategic importance of this patent for the assignee?
It provides exclusivity over specific compounds and uses, supporting market differentiation, licensing negotiations, and blocking competitors in the targeted therapeutic area.


References

  1. [Insert official USPTO link or patent document for 9,023,391]
  2. [Relevant scientific literature or patent databases]
  3. [Pharmaceutical patent landscape reports or analyses]

More… ↓

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Drugs Protected by US Patent 9,023,391

Applicant Tradename Generic Name Dosage NDA Approval Date TE Type RLD RS Patent No. Patent Expiration Product Substance Delist Req. Patented / Exclusive Use Submissiondate
Dexcel Pharma OMEPRAZOLE omeprazole TABLET, DELAYED RELEASE;ORAL 022032-001 Dec 4, 2007 OTC Yes Yes ⤷  Get Started Free ⤷  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: 9,023,391

Foriegn Application Priority Data
Foreign Country Foreign Patent Number Foreign Patent Date
Israel130602Jun 22, 1999

International Family Members for US Patent 9,023,391

Country Patent Number Estimated Expiration Supplementary Protection Certificate SPC Country SPC Expiration
Austria 390119 ⤷  Get Started Free
Australia 5423200 ⤷  Get Started Free
Canada 2377605 ⤷  Get Started Free
Germany 60038447 ⤷  Get Started Free
European Patent Office 1187599 ⤷  Get Started Free
Spain 2304349 ⤷  Get Started Free
Israel 130602 ⤷  Get Started Free
>Country >Patent Number >Estimated Expiration >Supplementary Protection Certificate >SPC Country >SPC Expiration

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