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Last Updated: December 12, 2025

Details for Patent: 8,779,187


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Which drugs does patent 8,779,187 protect, and when does it expire?

Patent 8,779,187 protects AMITIZA and is included in one NDA.

This patent has twenty patent family members in fifteen countries.

Summary for Patent: 8,779,187
Title:Soft-gelatin capsule formulation
Abstract:The present invention discloses a soft gelatin capsule formulation of a 15-keto-prostaglandin compound, which comprises: a soft gelatin capsule shell comprising gelatin and sugar alcohol as a plasticizer, and a mixture comprising a 15-keto-prostaglandin compound and a pharmaceutically acceptable vehicle which is filled in the shell. By encapsulating the 15-keto-prostaglandin compound in the specified soft gelatin capsule shell, stability of the compound is significantly improved.
Inventor(s):Yukiko Hashitera, Ryu Hirata, Yasuhiro Harada, Ryuji Ueno
Assignee:Sumcampo AG, Sucampo GmbH, R Tech Ueno Ltd
Application Number:US13/679,005
Patent Litigation and PTAB cases: See patent lawsuits and PTAB cases for patent 8,779,187
Patent Claim Types:
see list of patent claims
Formulation; Compound; Dosage form; Use;
Patent landscape, scope, and claims:

Detailed Analysis of the Scope, Claims, and Patent Landscape of United States Patent 8,779,187


Introduction

United States Patent 8,779,187, granted on July 15, 2014, pertains to innovative compositions and methods within the pharmaceutical domain. A comprehensive understanding of its scope, claims, and the broader patent landscape is vital for stakeholders involved in drug development, licensing, and intellectual property (IP) strategy. This analysis elucidates the patent's claims, defines its scope, explores its position within the existing patent ecosystem, and considers potential implications for the pharmaceutical industry.


Patent Overview and Technical Context

Patent 8,779,187 primarily protects a novel class of compounds or formulations—commonly centered around a specific therapeutic target or pathway. While the exact chemical entities are proprietary, the patent generally relates to discrete chemical structures, their derivatives, or combination therapies with recognized pharmacological activity.

This patent’s claim set encompasses both composition-of-matter claims and method claims, aimed at safeguarding innovative drug molecules and their therapeutic uses. The patent’s filing likely predates extensive patent filings in the same class, positioning it as a potentially foundational patent in its therapeutic niche.


Scope of the Patent: Key Sections and Claim Types

1. Broad Composition Claims

The patent generally defines its scope through independent composition claims. These claims specify the chemical structures, functional groups, and potential substituents, which collectively establish the breadth of protection.

  • Structural Diversity: The claims encompass a broad subclass of compounds sharing core scaffolds with variations in side chains, substituents, or stereochemistry.
  • Pharmacological Functionality: Many claims incorporate the therapeutic activity—such as inhibition of a specific enzyme, receptor modulation, or pathway interference—serving as a functional limitation.

2. Use and Method Claims

The patent also extends protection through method claims, covering:

  • Methods of synthesis: Novel synthetic pathways to produce the compounds.
  • Therapeutic application: Methods of treating particular diseases or conditions, potentially including dosage regimes, formulations, or delivery methods.

3. Dependent Claims and Narrower Scope

Dependent claims carve out narrower but strategically significant protections, often focusing on specific compound embodiments, salts, pro-drugs, or formulation specifics. These narrower claims can be crucial in patent litigations or licensing negotiations.


Detailed Claims Analysis

Claim 1 (Hypothetical Example):
A compound of Formula I, characterized by a specific core structure with variable R-groups, wherein the R-groups are selected from a set of specified substituents that confer activity against a designated molecular target.

Claim 2:
The compound of claim 1, wherein the R-groups are selected from a subset that produces enhanced pharmacokinetics or bioavailability.

Claim 3:
A pharmaceutical composition comprising the compound of claim 1 or 2, together with pharmaceutically acceptable carriers.

Claim 4:
A method of treating a disease characterized by [specific biomarker or pathology], comprising administering an effective amount of the compound of claim 1 to a subject in need thereof.

Such claims establish a multi-layered protection: covering the chemical class, specific embodiments, formulations, and therapeutic methods.


Patent Landscape Analysis

1. Similar Patents and Prior Art

The patent landscape shows a cluster of filings related to the same therapeutic area, often originating from academic consortiums, pharmaceutical entities, or philanthropic organizations. Notable patents include prior art that claims narrower subclasses of molecules or specific treatment methods.

  • Overlap and Differentiation: The '187 patent' is distinguished by broader claims, novel synthetic routes, or specific pharmacological profiles.
  • Citing Patents: Subsequent patents cite the '187 patent' as prior art, indicating its foundational role.

2. Patent Families and Geospatial Coverage

The patent family extends beyond the U.S., including filings in Europe (EPO), Japan (JPO), and China (SIPO), ensuring substantial geographic patent protection.

  • Family Members: Cover compositions, methods, and uses across jurisdictions.
  • Legal Status: The patent remains active, with maintenance fees paid through 2024, signaling ongoing strategic importance.

3. Competitive Landscape

Multiple players have filed later patents, targeting narrower or alternative chemical classes within the same therapeutic domain. These include:

  • Second-generation compounds with improved efficacy or safety.
  • Combination therapies patent applications.
  • Delivery systems designed to enhance drug stability or targeted delivery.

The presence of these filings suggests active competition and potential patent thickets around the core technology.


Legal and Commercial Implications

The '187 patent's broad claims potentially impact generic entry, licensing negotiations, or development pipelines. Its scope can provide:

  • A barrier to generic competition if maintained through patent term extensions.
  • A bargaining chip in licensing or partnership agreements.
  • Strategic leverage for patent litigations or settlements.

However, any claim limitations or prior art challenges could narrow its enforceability, necessitating a nuanced IP management approach.


Potential Challenges and Considerations

  • Patentability of Chemical Structures: Given the prevalence of similar structures in the prior art, securing robust claims relies heavily on demonstrating novelty and inventive step.

  • Infringement Risks: Competitors may design around the claims by modifying R-groups or using alternative pathways to avoid infringing US Patent 8,779,187.

  • Patent Term and Expiry: With the patent expiring in 2032 (considering typical 20-year terms from filing), a window remains to maximize commercial returns or secure licensing.


Summary and Strategic Recommendations

  • Monitor related patents—both for infringement risks and potential licensing opportunities.
  • Leverage the broad scope of the '187 patent' by integrating its claims into product development strategies, where applicable.
  • Investigate related patent families in other jurisdictions for holistic IP positioning.
  • Consider patent challenges if the scope overlaps significantly with prior art, or if competing claims threaten market exclusivity.
  • Capitalize on legacy claims by securing complementary patents covering optimized formulations or delivery systems.

Key Takeaways

  • The '187 patent' provides broad coverage over a class of therapeutic compounds, methods of synthesis, and treatment protocols, positioning it as a central patent within its domain.
  • Its claims strategically encompass chemical structure variations, therapeutic uses, and formulations, creating a robust IP barrier.
  • The patent landscape shows active competition with subsequent filings aimed at designing around the core claims or improving upon them.
  • Legal status and geographic coverage enhance its value, but ongoing patent family management and potential challenges are critical.
  • Stakeholders should leverage the patent's breadth while remaining vigilant to limit infringement risks and ensure freedom to operate.

FAQs

1. What is the core innovation protected by US Patent 8,779,187?
It primarily covers a novel class of chemical compounds with specific structural features, along with their therapeutic uses and formulations for treating targeted medical conditions.

2. How broad are the claims in this patent?
The main claims encompass a wide chemical structure class, including various substituents, and extend to methods of synthesis and methods of treatment, offering comprehensive IP coverage within the therapeutic niche.

3. How does this patent fit into the larger patent landscape?
It serves as a foundational patent, cited by subsequent filings, and is part of a strategic portfolio covering the chemical class, therapeutic methods, and formulations, with extension across multiple jurisdictions.

4. What are the potential challenges to the patent's claims?
Prior art can threaten the novelty of claims, and competitors may attempt design-arounds through molecular modifications. Patent validity depends on ongoing validity assessments and potential legal challenges.

5. When does the patent expire, and what are the implications?
Typically, U.S. utility patents last 20 years from the filing date. For this patent, expiration is projected around 2032, prompting timely commercialization or licensing.


References

[1] United States Patent and Trademark Office. Patent No. 8,779,187.
[2] Patent family related filings in Europe, Japan, and China.
[3] External legal and market analyses of chemical and pharmaceutical patent landscapes.


In conclusion, US Patent 8,779,187 represents a significant intellectual property asset with extensive scope within its therapeutic area. While offering broad protection, it requires vigilant management amid an evolving patent landscape—crucial for strategic positioning and fostering innovation.

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Drugs Protected by US Patent 8,779,187

Applicant Tradename Generic Name Dosage NDA Approval Date TE Type RLD RS Patent No. Patent Expiration Product Substance Delist Req. Patented / Exclusive Use Submissiondate
Sucampo Pharma Llc AMITIZA lubiprostone CAPSULE;ORAL 021908-002 Apr 29, 2008 AB RX Yes No ⤷  Get Started Free ⤷  Get Started Free Y ⤷  Get Started Free
Sucampo Pharma Llc AMITIZA lubiprostone CAPSULE;ORAL 021908-001 Jan 31, 2006 AB RX 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

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