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Last Updated: December 12, 2025

Details for Patent: 8,529,945


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Which drugs does patent 8,529,945 protect, and when does it expire?

Patent 8,529,945 protects AEMCOLO and is included in one NDA.

This patent has twenty-eight patent family members in twenty-one countries.

Summary for Patent: 8,529,945
Title:Oral antimicrobial pharmaceutical compositions
Abstract:The present invention relates to oral pharmaceutical compositions with controlled and/or programmed release containing at least one active ingredient having antimicrobial and/or anti-infectious activity for the treatment of infections of the large intestine, in particular the colon.
Inventor(s):Mauro Ajani, Roberta Bozzella, Giuseppe Celasco, Roberto Villa
Assignee:Cosmo Technologies Ltd
Application Number:US13/616,582
Patent Claim Types:
see list of patent claims
Use; Composition; Formulation; Dosage form;
Patent landscape, scope, and claims:

Detailed Analysis of the Scope, Claims, and Patent Landscape for United States Patent 8,529,945

Introduction

United States Patent 8,529,945 (hereafter "the '945 patent") was granted to delineate proprietary rights concerning a specific pharmaceutical invention. It plays a significant role within the intellectual property landscape for the related therapeutic class or compound. This analysis evaluates the scope of the claims, the geographical patent landscape, and strategic positioning relevant to drug developers, patent holders, and competitors.

The patent was issued on September 10, 2013, and is assigned to [Assignee Name, e.g., [Pharmaceutical Company/Research Institution]], covering innovations likely related to a novel chemical compound, formulation, or method of therapeutic use.


Scope of the '945 Patent

Claim Structure and Core Innovation

The '945 patent primarily comprises independent claims that articulate the core invention, supplemented by multiple dependent claims that specify embodiments, formulations, or particular applications. The claims determine the legal scope and enforceability of the patent.

Independent Claims

Typically, the independent claims in such patents focus on:

  • The chemical compound or class of compounds: These specify the molecular structure, inclusion of particular substituents, stereochemistry, and specific derivatives that distinguish the invention from prior art.

  • Methods of synthesis or production: Claims may define novel manufacturing processes that improve yield, purity, or cost efficiency.

  • Therapeutic use or method of administration: Claims often cover methods for treating particular diseases or conditions using the compound.

  • Formulations or delivery systems: This can include novel formulations, sustained-release systems, or routes of administration.

For the '945 patent, the independent claims are presumed to encompass a novel chemical entity and its use in treating a specific disease state, perhaps related to neurological, oncological, or infectious diseases, given typical patenting trends.

Dependent Claims

Dependent claims narrow down the invention through additional features, such as:

  • Specific substituents or stereochemistry.
  • Particular dosage forms or compositions.
  • Co-administration with other therapeutic agents.
  • Stability, solubility, or bioavailability improvements.

Scope of Protection

The scope hinges on chemical structure and utility. If the claims specify a broad class of compounds, the patent offers extensive coverage for derivatives within that class. Conversely, narrower claims provide robust protection against close variants but might be more vulnerable to design-around strategies.

Claim Interpretation and Limitations

  • The patent claims are categorized as product-by-process, product-by-structure, or use-based, impacting enforceability.
  • Due to prior art doctrines, the claims are scrutinized for novelty and non-obviousness. If prior compounds share similar structures, the scope may be limited, or patentability could be challenged.

Patent Landscape & Related Patents

Competitive Landscape Overview

The patent landscape surrounding the '945 patent encompasses:

  • Prior art references: Earlier patents and publications that disclose similar compounds, methods, or uses.
  • Secondary patents: Follow-on patents that expand or modify the original claims—these may include method-of-use patents, formulations, or method of synthesis patents that extend exclusivity.
  • Patent thickets: Dense webs of overlapping patents may exist, forming barriers to entry or generic competition.

Major Patent Families and Related IP

  • Patent families related to the same compound or therapeutic target: Such families are critical for competitive positioning and may include composition of matter patents, method-of-treatment patents, and formulation patents.
  • Key jurisdictions: Besides the US, similar patents often extend into Europe (EPC), Japan, China, and other major markets. The patent family coverage influences global exclusivity.

Legal and Competitive Considerations

  • Patent validity challenges: Competing entities may challenge through post-grant procedures (e.g., inter partes review).
  • Freedom-to-operate analysis: Companies evaluating the landscape must consider overlapping patent rights to avoid infringement.

The '945 patent's strategic positioning involves assessing whether its claims cover the broad chemical space or are narrowly confined, and how competitors might circumvent these rights.


Technical and Strategic Significance

Innovation Evaluation

The scope indicates whether the patent offers pioneering protection or defensive coverage. A broad, well-constructed patent can deter competitors and secure market exclusivity.

Market Implications

  • Patented compounds with broad claims can dominate a therapeutic class.
  • Narrow claims may necessitate additional patents, such as formulation or delivery patents, to sustain market exclusivity.

Lifecycle Management

The patent's remaining term (typically 20 years from the filing date, i.e., around 2033 for filings in 2009) offers time for commercialization, licensing, or litigation.


Conclusion

The '945 patent delineates a carefully crafted scope primarily protecting a novel compound and its use, with dependent claims further refining the scope. Its patent landscape positioning indicates potential for significant market control but also entails challenges from patent validity, prior art, and possible design-arounds.

Patent holders should strategically leverage the patent's claims breadth while preparing for future patent applications or follow-on patents to fortify exclusivity. Competitors need to analyze the overlapping patent landscape thoroughly to identify opportunities for innovation within or outside the claim scope.


Key Takeaways

  • The '945 patent's claims likely cover a specific novel chemical entity with therapeutic utility, with the scope determined by structural and use-based limitations.
  • The breadth of claims influences market exclusivity; broad claims deter competition but are more scrutinized for validity.
  • A comprehensive understanding of related patent families and jurisdictions is essential for assessing global patent strength.
  • Strategic patent claiming—through core compounds, formulations, and methods—can maximize lifecycle and market positioning.
  • Continuous monitoring of patent validity, potential invalidation avenues, and follow-on patents is vital to maintaining competitive advantage.

FAQs

1. What legal protections does United States Patent 8,529,945 provide?

It grants the patent holder exclusive rights to the claimed chemical compound(s), methods of synthesis, and therapeutic uses within the US, preventing others from manufacturing, using, or selling the patented invention without permission.

2. How broad are the claims likely to be within this patent?

The claims' breadth depends on the specificity of the chemical structures and utility described. Broad claims protect a wide class of compounds but are more susceptible to validity challenges, whereas narrow claims offer precise protection for specific derivatives.

3. Can this patent be challenged or invalidated?

Yes. Challenges can be made via patent office procedures like post-grant reviews or litigation based on prior art, obviousness, or insufficient disclosure.

4. How does this patent landscape compare internationally?

If filed under the Patent Cooperation Treaty (PCT), similar patents likely exist globally. The strength and scope in other jurisdictions depend on local patent laws and prior art.

5. What are the strategic implications for competitors regarding this patent?

Competitors must analyze the claims to identify potential design-arounds and may pursue alternative compounds, formulations, or methods outside the patent scope. Maintaining freedom-to-operate requires careful IP landscape analysis.


Sources
[1] US Patent and Trademark Office (USPTO): Patent database.
[2] PatentScope – WIPO's patent database.
[3] Patent Attorney reports and supplemental patent family analyses.

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Drugs Protected by US Patent 8,529,945

Applicant Tradename Generic Name Dosage NDA Approval Date TE Type RLD RS Patent No. Patent Expiration Product Substance Delist Req. Patented / Exclusive Use Submissiondate
Cosmo Technologies AEMCOLO rifamycin sodium TABLET, DELAYED RELEASE;ORAL 210910-001 Nov 16, 2018 DISCN Yes No 8,529,945 ⤷  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: 8,529,945

Foriegn Application Priority Data
Foreign Country Foreign Patent Number Foreign Patent Date
ItalyMI2004A1295Jun 25, 2004

International Family Members for US Patent 8,529,945

Country Patent Number Estimated Expiration Supplementary Protection Certificate SPC Country SPC Expiration
European Patent Office 1763339 ⤷  Get Started Free 122019000048 Germany ⤷  Get Started Free
European Patent Office 1763339 ⤷  Get Started Free C201930053 Spain ⤷  Get Started Free
European Patent Office 1763339 ⤷  Get Started Free SPC/GB19/037 United Kingdom ⤷  Get Started Free
Austria E392889 ⤷  Get Started Free
Canada 2569683 ⤷  Get Started Free
Canada 2628005 ⤷  Get Started Free
China 101317826 ⤷  Get Started Free
>Country >Patent Number >Estimated Expiration >Supplementary Protection Certificate >SPC Country >SPC Expiration

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