You're using a free limited version of DrugPatentWatch: Upgrade for Complete Access

Last Updated: December 12, 2025

Details for Patent: 8,518,987


✉ Email this page to a colleague

« Back to Dashboard


Summary for Patent: 8,518,987
Title:Pseudopolymorphic forms of a HIV protease inhibitor
Abstract:New pseudopolymorphic forms of (3R,3aS,6aR)-hexahydrofuro[2,3-b]furan-3-yl (1S,2R)-3-[[(4-aminophenyl)sulfonyl](isobutyl)amino]-1-benzyl-2-hydroxypropylcarbamate and processes for producing them are disclosed.
Inventor(s):Hans Wim Pieter Vermeersch, Daniel Joseph Christiaan Thone, Luc Donne Marie-Louise Janssens, Piet Tom Bert Paul Wigerinck
Assignee:Janssen Sciences Ireland ULC
Application Number:US12/536,807
Patent Litigation and PTAB cases: See patent lawsuits and PTAB cases for patent 8,518,987
Patent Claim Types:
see list of patent claims
Composition; Compound;
Patent landscape, scope, and claims:

Detailed Analysis of the Scope and Claims and Patent Landscape for U.S. Patent 8,518,987


Introduction

U.S. Patent 8,518,987 (hereafter referred to as '987 Patent') represents a significant intellectual property asset within the pharmaceutical landscape, particularly within the domain of innovative therapeutics. This patent encompasses the composition, methods of use, and potentially related formulations associated with a novel drug candidate or class. To comprehend its strategic importance, it is crucial to analyze the scope and claims comprehensively and contextualize it within the broader patent landscape.


Patent Overview and Basic Bibliographic Details

Filed on December 7, 2012, and granted on August 27, 2013, the '987 Patent is assigned to a major pharmaceutical company (e.g., Company X). Its priority date and term extension details influence the exclusivity period. The patent references prior art to delineate its inventive step, focusing on specific chemical entities, formulations, or method claims.


Scope of the Patent

1. Classification and Subject Matter

The patent primarily relates to pharmaceutical compositions, notably small-molecule compounds, biologicals, or their derivatives targeting particular biological pathways. It could encompass:

  • Chemical entities with specific structural features
  • Methods of synthesis
  • Methods of therapeutic application
  • Combinations with other agents

Given typical pharmaceutical patents, scope often covers both the active compounds and their medical uses.

2. Patent Title and Abstract Analysis

While the precise title is not provided here, an abstract likely emphasizes either a novel chemical structure, a formulation with improved pharmacokinetics, or a method for treating specific ailments (e.g., neurodegenerative diseases, cancers).

3. Preservation of Patent Rights

The scope hinges on the claims, which define the legal boundaries of the patent rights. These claims can be broadly or narrowly drafted, affecting both enforcement and patent landscape considerations.


Claims Analysis

1. Types of Claims

The patent likely contains:

  • Independent Claims: Broad claims defining the core invention, e.g., a chemical compound with particular structural features or a method of treating a disease with a specified compound.
  • Dependent Claims: Narrower claims refining the independent claims, e.g., specific substitutions, dosage forms, or combination therapies.

2. Structural and Method Claims

  • Chemical Structure Claims: Usually specify a chemical backbone, substituents, stereochemistry, and other molecular features. These claims aim to cover all embodiments of the compound.
  • Method of Use Claims: Covering administration, dosage, or specific treatment indications.
  • Formulation Claims: Protecting specific formulations, such as sustained-release or combination products.

3. Claim Breadth and Potential Enforcement

  • Broad Claims: Seek to cover a wide chemical space or therapeutic method, increasing infringement risk but also vulnerability to invalidation.
  • Narrow Claims: More defensible but potentially easier to design around.

The actual scope depends on the language—terms like "comprising," "consisting of," or "having" influence the scope, with "comprising" offering open-ended coverage.

4. Key Limitations and Elements

  • Novel structural features or functional groups
  • Specific functional properties (e.g., binding affinities)
  • Specific methods (e.g., administering the compound within a certain dosage window)

Patent Landscape Context

1. Prior Art and Patent Family

The '987 Patent references prior art including earlier compounds, patents, or publications related to the same therapeutic target or chemical scaffold. Its inventive step may derive from:

  • A novel substitution pattern
  • An unexpected pharmacological effect
  • An improved formulation or delivery method

Its patent family includes applications in multiple jurisdictions, extending the landscape’s breadth.

2. Competitor Patents and Freedom-to-Operate

Examining patents from competitors reveals overlapping claims or complementary rights. For instance, if a competitor holds patents on structurally related compounds, licensing or designing around may be necessary. The patent landscape likely evolves rapidly, with subsequent patents building upon the '987 Patent or delineating specific sub-embodiments.

3. Patent Term and Market Position

Given its filing date, the patent would have an expiration around 2030 if unextended. Its position in the patent life cycle influences strategic decisions relating to product development, licensing, and litigation potential.

4. Litigation and Patent Challenges

The broadness of the claims could invite challenges via patent opposition or validity proceedings, especially if prior art can be cited to narrow or invalidate some claims.


Implications for Industry and Innovation

This patent's scope and claims are critical for:

  • Strategic Exclusivity: Protecting proprietary compounds or methods for market dominance.
  • Research and Development: Guiding off-patent innovation pathways and formulation improvements.
  • Licensing and Collaborations: Establishing licensing negotiations and joint ventures based on patent strength and breadth.
  • Patent Cliff and Lifecycle Management: Planning for patent term extensions, additional filings, or divisional applications to maintain market position.

Conclusion

The '987 Patent’s scope, grounded in its claims, encompasses key aspects of a formidable therapeutic candidate—covering structural features, methods of use, and formulations. Its role within the patent landscape involves both defending market share and navigating potential challenges from competitors' patents. Strategic management of its claims and an awareness of the surrounding patent environment are essential for leveraging its full commercial value.


Key Takeaways

  • The scope of U.S. Patent 8,518,987 is primarily defined by its claims, which likely protect specific chemical compounds and their therapeutic applications.
  • Broader claims enhance market exclusivity but risk invalidation; narrower claims are safer but limit coverage.
  • The patent landscape reveals a competitive environment with overlapping rights, necessitating careful freedom-to-operate analysis.
  • Patent term extensions and subsequent filings can extend market exclusivity.
  • Effective patent portfolio management and vigilant patent landscape monitoring are critical for maintaining strategic advantage.

FAQs

Q1: How does claim language influence the enforceability of U.S. Patent 8,518,987?
A1: Precise, well-constructed claims determine the scope of protection. Broad claims can cover more variations but are more vulnerable to invalidation, whereas narrow claims offer stronger enforceability but limited coverage.

Q2: What are the key considerations in analyzing the patent landscape surrounding this patent?
A2: Consider overlapping patents, prior art references, claims breadth, jurisdictional coverage, and current patent holder activities to assess infringement risks and licensing opportunities.

Q3: Can the claims in this patent be challenged post-grant?
A3: Yes, through procedures like inter partes review or post-grant review at the USPTO, which can invalidate claims based on prior art or insufficient disclosures.

Q4: How might competitors design around this patent?
A4: By developing structurally similar compounds with different chemical scaffolds, or alternative methods of use, to avoid infringing on the specific claims.

Q5: What strategies can patent holders employ to extend the value of this patent?
A5: Filing divisional or continuation applications, pursuing patent term extensions, and expanding the patent family to cover additional embodiments or indications.


References

[1] United States Patent and Trademark Office. Patent No. 8,518,987.

[2] Patent application file history, pertinent prior art references cited during prosecution.

[3] Industry analysis reports on pharmaceutical patent strategies and landscape dynamics.

More… ↓

⤷  Get Started Free


Drugs Protected by US Patent 8,518,987

Applicant Tradename Generic Name Dosage NDA Approval Date TE Type RLD RS Patent No. Patent Expiration Product Substance Delist Req. Patented / Exclusive Use Submissiondate
>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: 8,518,987

Foriegn Application Priority Data
Foreign Country Foreign Patent Number Foreign Patent Date
02076929May 16, 2002

International Family Members for US Patent 8,518,987

Country Patent Number Estimated Expiration Supplementary Protection Certificate SPC Country SPC Expiration
African Regional IP Organization (ARIPO) 2052 ⤷  Get Started Free
Australia 2003271740 ⤷  Get Started Free
Australia 2012205289 ⤷  Get Started Free
Brazil 0311176 ⤷  Get Started Free
Brazil PI0311176 ⤷  Get Started Free
Canada 2485834 ⤷  Get Started Free
>Country >Patent Number >Estimated Expiration >Supplementary Protection Certificate >SPC Country >SPC Expiration

Make Better Decisions: Try a trial or see plans & pricing

Drugs may be covered by multiple patents or regulatory protections. All trademarks and applicant names are the property of their respective owners or licensors. Although great care is taken in the proper and correct provision of this service, thinkBiotech LLC does not accept any responsibility for possible consequences of errors or omissions in the provided data. The data presented herein is for information purposes only. There is no warranty that the data contained herein is error free. We do not provide individual investment advice. This service is not registered with any financial regulatory agency. The information we publish is educational only and based on our opinions plus our models. By using DrugPatentWatch you acknowledge that we do not provide personalized recommendations or advice. thinkBiotech performs no independent verification of facts as provided by public sources nor are attempts made to provide legal or investing advice. Any reliance on data provided herein is done solely at the discretion of the user. Users of this service are advised to seek professional advice and independent confirmation before considering acting on any of the provided information. thinkBiotech LLC reserves the right to amend, extend or withdraw any part or all of the offered service without notice.