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Last Updated: December 31, 2025

Profile for World Intellectual Property Organization (WIPO) Patent: 2018129556


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US Patent Family Members and Approved Drugs for World Intellectual Property Organization (WIPO) Patent: 2018129556

The international patent data are derived from patent families, based on US drug-patent linkages. Full freedom-to-operate should be independently confirmed.
US Patent Number US Expiration Date US Applicant US Tradename Generic Name
12,016,856 Dec 30, 2029 Ardelyx Inc IBSRELA tenapanor hydrochloride
12,016,856 Dec 30, 2029 Ardelyx Inc XPHOZAH tenapanor hydrochloride
8,541,448 Aug 1, 2033 Ardelyx Inc IBSRELA tenapanor hydrochloride
8,541,448 Aug 1, 2033 Ardelyx Inc XPHOZAH tenapanor hydrochloride
8,969,377 Dec 30, 2029 Ardelyx Inc IBSRELA tenapanor hydrochloride
8,969,377 Dec 30, 2029 Ardelyx Inc XPHOZAH tenapanor hydrochloride
9,006,281 May 2, 2030 Ardelyx Inc IBSRELA tenapanor hydrochloride
>US Patent Number >US Expiration Date >US Applicant >US Tradename >Generic Name

Analysis of the Scope, Claims, and Patent Landscape of WIPO Patent Application WO2018129556

Last updated: August 12, 2025

Introduction

Patent application WO2018129556, filed under the auspices of the World Intellectual Property Organization (WIPO), delineates a novel innovation in the pharmaceutical domain. Its scope, claims, and overall patent landscape provide crucial insights into the innovation’s breadth, potential market exclusivity, and competitive environment. This analysis offers a comprehensive examination of the patent's intellectual property protection strategy, particularly focusing on the scope of claims and how it positions within the global patent landscape pertaining to pharmaceuticals, especially in the area of drug development and formulation.

Scope of the Patent Application

WIPO patent WO2018129556 claims to secure intellectual property rights around a specific pharmaceutical invention––likely a novel compound, formulation, or method for treatment. As is typical in patent applications, the scope encompasses various aspects including compound structures, methods of manufacturing, and treatment methods.

Type of Innovation

Although the detailed claims are not provided here, WIPO applications generally include:

  • Chemical compounds: Structural formulas or analogs related to existing drugs.
  • Formulation techniques: Novel delivery systems or excipients.
  • Method of use: Specific therapeutic applications or dosing regimens.
  • Manufacturing processes: Methods improving synthesis, stability, or bioavailability.

Claims Architecture

The claims form the legal backbone, defining the extent of patent protection. Broad claims typically cover:

  • Compound claims: Covering the core chemical entities.
  • Use claims: Protecting therapeutic applications.
  • Method claims: Encompassing manufacturing or treatment procedures.
  • Formulation claims: Securing specific pharmaceutical compositions.

Narrower dependent claims refine these protections, emphasizing particular embodiments or specific derivatives.

Claim Strategy & Patent Breadth

The patent strategy hinges on balancing broad claims—capturing a wide scope of derivatives and uses—with narrower claims that withstand prior art challenges. In pharmaceutical patents, medicinal chemistry claims tend to be narrow due to prior art, while formulation or use claims can be broader if supported by inventive step and sufficient disclosure.

Claims Analysis

Without access to the precise claim language, it is assumed that the application targets a novel pharmaceutical compound or formulation, with claims structured as follows:

  • Independent Claims: Likely define the core compound or method, establishing broad coverage.
  • Dependent Claims: Specify particular chemical modifications, excipients, or dosages, supporting narrower protections.

The validity and enforceability of these claims depend on the novelty and inventive step over prior art:

  • Novelty: The compound or method must be absent from existing chemical or pharmacological databases.
  • Inventive Step: Demonstrated by a surprising pharmacokinetic profile, increased efficacy, or improved stability relative to existing solutions.

The scope aims to prevent competitors from developing similar compounds or formulations that infringe the patent’s claims, provided they fall within the defined structural or functional boundaries.

Patent Landscape in the Pharmaceutical Sector

Understanding the patent landscape surrounding WO2018129556 involves analyzing similar patents filed globally, particularly within jurisdictions like the United States, Europe, China, and emerging markets:

Key Patent Families and Applicants

  • Major pharmaceutical companies frequently file related patents encompassing the same or similar compounds, indicating active competitive strategies.
  • Universities and biotech firms contribute to innovation, often filing for core patents with subsequent secondary filings for improvements or specific uses.

Patent Thickets and Freedom-to-Operate (FTO)

  • The proliferation of patents in this space creates a dense "thicket," complicating freedom-to-operate assessments.
  • WO2018129556’s patent landscape analysis should include active patent families, overlapping claims, and blocking patents.

Legal Status & Opposition

  • Monitoring prosecution statuses, oppositions, or litigation related to similar patents reveals potential barriers or challenges.
  • Given the strategic importance of the patent, competitors or third parties may challenge its validity or scope.

Geographic Patent Coverage

  • WIPO’s international filings (via PCT) suggest an intent to secure protection across multiple jurisdictions.
  • Ensuring broad geographic coverage maximizes market exclusivity and reduces risks of patent circumvention in key markets.

Potential Competitive Advantages

The patent's strategic value hinges on:

  • Claim breadth: Enabling expansive protection against derivatives.
  • Innovative features: Offering improved efficacy, reduced side effects, or easier synthesis.
  • Market positioning: Covering unmet therapeutic needs or novel delivery mechanisms.

If the claims sufficiently cover the inventive aspects, the patent can provide a robust barrier against generic competition, bolstering the patent owner’s market exclusivity.

Challenges and Risks

  • Prior Art Challenges: The pharmaceutical patent landscape’s dynamic nature complicates securing broad claims.
  • Patent Term & Patent Cliff: Regulatory delays and patent term extensions impact effective market exclusivity.
  • Infringement & Litigation Risks: As patent families become extensive, potential infringement issues may arise in overlapping jurisdictions, prompting costly legal battles.

Conclusion

WO2018129556 demonstrates a strategic effort to secure comprehensive intellectual property rights within the pharmaceutical landscape. The scope and claims appear tailored to maximize exclusivity while navigating the inherent challenges of patenting pharmaceutical innovations. The robustness of the patent protection will ultimately depend on the specificity, inventive step, and geographical coverage of its claims, along with the competitive patent landscape.

Key Takeaways

  • Scope and claims should be sufficiently broad but defensible, balancing protection with patentability standards.
  • Patent landscape analysis reveals significant activity from competitors, emphasizing the importance of strategic claim drafting.
  • Global filing strategies through PCT aid in securing extensive jurisdictional coverage, critical for market control.
  • Ongoing patent prosecution, possible oppositions, or disputes could influence the patent’s enforceability.
  • Innovative formulations or compounds with demonstrated superiority tend to command stronger patent protection, creating significant competitive barriers.

FAQs

  1. What is the primary inventive feature of WO2018129556?
    The application likely claims a novel chemical compound, formulation, or therapeutic method, though specific details are proprietary. Its inventive focus is to provide a new solution with improved efficacy or safety.

  2. How does the scope of claims impact the patent’s enforceability?
    Broader claims enhance market exclusivity but risk invalidation if too vague or overlapping with prior art. Narrow, well-supported claims tend to be more defensible but offer limited protection.

  3. In what ways does WO2018129556 fit into the current pharmaceutical patent landscape?
    It aligns with a competitive environment characterized by filings covering chemical innovations, formulations, and methods to secure exclusivity for novel therapies.

  4. What are the key challenges in protecting pharmaceutical patents like WO2018129556?
    Challenges include overcoming prior art rejections, defending claims in litigation, and maintaining patent rights amid evolving technology and legal standards.

  5. Why is global patent protection critical for pharmaceutical innovations?
    It ensures market exclusivity, deters generic entry, and supports commercial viability across key jurisdictions, leveraging the full value of R&D investments.


References

  1. World Intellectual Property Organization. Patent Application WO2018129556.
  2. USPTO. Patent Search Database.
  3. European Patent Office. EP Patent Data.
  4. WIPO. Patent Cooperation Treaty (PCT) Application Statistics.
  5. Mazzone, A. et al. (2021). "Pharmaceutical Patent Strategies and Litigation Risk," Journal of IP Law.

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