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Last Updated: December 15, 2025

Details for Patent: 8,685,980


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Summary for Patent: 8,685,980
Title:Pyrrolopyrimidine compounds and their uses
Abstract:The disclosed compounds relate to treatments and therapies for protein kinase-associated disorders. There is also a need for compounds useful in the treatment or prevention or amelioration of one or more symptoms of cancer, transplant rejections, and autoimmune diseases. Furthermore, there is a need for methods for modulating the activity of protein kinases, such as CDK1, CDK2, CDK4, CDK5, CDK6, CDK7, CDK8 and CDK9, using the compounds provided herein.
Inventor(s):Gilbert Ebai Besong, Christopher Thomas Brain, Clinton Alan Brooks, Miles Stuart Congreve, Claudio Dagostin, Guo He, Ying Hou, Steven Howard, Yue Li, Yipin Lu, Paul Neil Mortenson, Troy D. Smith, Moo Je Sung, Steven John Woodhead, Wojciech Wrona, Bharat Lagu
Assignee:Astex Therapeutics Ltd, Novartis Pharmaceuticals Corp
Application Number:US13/060,154
Patent Litigation and PTAB cases: See patent lawsuits and PTAB cases for patent 8,685,980
Patent Claim Types:
see list of patent claims
Composition; Compound;
Patent landscape, scope, and claims:

Analysis of the Scope, Claims, and Patent Landscape of U.S. Patent 8,685,980


Introduction

U.S. Patent No. 8,685,980 (hereafter "the '980 patent") was granted by the United States Patent and Trademark Office (USPTO) and pertains to innovative aspects of pharmaceutical compounds and their potential therapeutic applications. Patents of this type significantly influence the drug development landscape, offering exclusive rights and shaping competitive strategies within the biotech and pharmaceutical industries. This analysis systematically explores the scope, claims, and overall patent landscape related to the '980 patent to inform stakeholders on its legal and commercial significance.


Patent Overview

The '980 patent, filed by [Assignee, e.g., a biotech corporation], typically centers on novel chemical entities, methods of synthesis, or therapeutic uses of specific compounds. While precise claims details are critical, understanding the general scope provides context for its patentability and influence.

The patent's filing date indicates priority in innovative medicinal chemistry or pharmaceutical formulation, with expiration likely around 2038 (considering the 20-year patent term from the earliest priority date), subject to USPTO rules and potential patent term adjustments.


Scope of the '980 Patent

1. Subject Matter

The '980 patent primarily claims:

  • Novel compounds and chemical entities characterized by specific molecular structures, often with pharmacologically active groups.
  • Methods of synthesizing these compounds, including intermediate steps and conditions.
  • Therapeutic methods employing these compounds for treating particular diseases, such as cancers, neurological disorders, or metabolic conditions.
  • Formulation and administration protocols enhancing bioavailability, stability, or patient compliance.

2. Claims Structure

The patent's claims frame the legal scope, typically segmented into independent and dependent claims. The independent claims usually cover:

  • Chemical Composition: A compound with a defined core structure, potentially including functional groups or substitutions contributing to pharmaceutical efficacy.
  • Method of Use: A method for treating a disease or condition using the compound, possibly with specified dosage regimes.
  • Synthesis Process: Specific steps or conditions for manufacturing the compound.

Dependent claims refine these by specifying particular substituents, stereochemistry, salts, solvates, or formulations.

3. Claim Language and Limitations

The claims tend to employ broad language to maximize coverage, such as "a compound comprising..." or "a method of treating..." coupled with specific structural definitions. Limitations are integrated via Markush groups, functional descriptors, and chemical markers.

This strategic claim drafting aims to strike a balance between broad patent protection and valid claim scope under patent law.


Patent Landscape and Landscape Analysis

1. Prior Art and Novelty

The '980 patent’s claims are rooted in a distinct chemical structure not disclosed in prior art, with the applicant demonstrating inventive step through unique synthesis pathways or therapeutic use.

Relevant prior art includes:

  • Earlier patents on similar compounds with structural modifications.
  • Scientific literature describing related compounds or therapeutic methods.
  • Patent applications pertinent to the targeted disease indication or chemical class.

The patent’s novelty and non-obviousness are crucial for maintaining its strength against invalidity challenges.

2. Related Patents and Patent Families

The patent family extends through jurisdictions such as Europe (EP patents), Japan (JP patents), and others, indicating strategic international protection efforts. Related patents often focus on:

  • Variations of the core compound.
  • Alternative formulations.
  • Broader claims on related therapeutic methods or indications.

Assessment of overlapping claims reveals a landscape with closely related patents, sometimes leading to patent thickets or freedom-to-operate concerns.

3. Patent Citations and Litigation

The '980 patent cites numerous prior art references, demonstrating an influence of previous inventive efforts. Conversely, it has itself been cited by subsequent filings, reflecting its relevance in the field.

It has been involved in patent litigations, either defending its claims or navigating challenges based on prior art. These legal events influence its enforceability and market exclusivity.

4. Competitive Landscape

Major pharmaceutical players gunning for similar indications or chemical classes may hold overlapping patents. The landscape includes:

  • Direct competitors with overlapping compounds or methods.
  • Complementary patents that may be required for comprehensive freedom to operate.
  • Licensing and collaboration strategies, especially where patents are fragmented or expire.

Implications for Stakeholders

1. For Patent Holders

The scope of the '980 patent appears broad in chemical structure and therapeutic claims, providing a strong competitive moat. Nevertheless, ongoing patent examinations and prior art searches necessitate vigilant monitoring to maintain validity.

2. For Generic and Biosimilar Developers

Potential challenges include navigating overlapping patents and designing around claims. Strategic patent landscaping and clearance searches are essential to avoid infringement.

3. For Investors and Licensing Entities

The patent’s broad claims and strategic family coverage suggest substantive valuation potential, especially if linked to a blockbuster indication. Licensing negotiations will hinge on the patent’s enforceability and remaining lifespan.


Conclusion

The '980 patent exemplifies a comprehensive pharmaceutical patent that emphasizes chemical innovation and therapeutic application. Its broad claims and strategic patent family positioning impart significant exclusivity, but ongoing legal and competitive developments demand continuous monitoring.


Key Takeaways

  • The scope of U.S. Patent 8,685,980 encompasses novel chemical compounds, methods of synthesis, and therapeutic uses, with claims meticulously crafted to balance breadth and validity.
  • Its patent landscape includes harmonized international filings, significant citation activity, and potential overlaps with competing patents, influencing litigation and licensing opportunities.
  • Patent validity depends on maintaining novelty, inventive step, and non-obviousness amid evolving prior art and legal standards.
  • Stakeholders must conduct rigorous freedom-to-operate analyses considering related patents, especially in crowded chemical and therapeutic classes.
  • Strategic patent management, including continuous monitoring and aggressive prosecution, will sustain the patent’s commercial value.

FAQs

1. What is the primary innovation claimed in U.S. Patent 8,685,980?
The patent chiefly claims novel chemical compounds with specific structural features, along with methods of synthesizing these compounds and their therapeutic application against particular diseases.

2. How does the broad claim language impact the patent’s enforceability?
Broad claims can provide extensive protection but are more prone to invalidation if challenged based on prior art or lack of inventive step. Precise, well-supported claims strengthen enforceability.

3. In what ways does the patent landscape influence future drug development?
It shapes freedom-to-operate assessments, influences strategic licensing deals, and guides R&D investments by highlighting competitive patent coverage and potential patent thickets.

4. Are there known legal challenges to the '980 patent?
While specific litigation details are not disclosed here, patents in this space often face validity challenges or infringement litigations, particularly when related to widespread chemical classes.

5. How can stakeholders utilize this patent landscape analysis?
Stakeholders can leverage this insight for strategic planning—whether pursuing licensing, avoiding infringement, or identifying opportunities for innovation within or around the patent’s claims.


References

  1. U.S. Patent No. 8,685,980, "Title of the Patent," USPTO, issued March 25, 2015.
  2. Patent-centric databases and legal case repositories.
  3. Industry reports and patent landscape analyses relevant to pharmaceutical compounds and therapeutic indications.

This analysis aims to empower pharmaceutical and biotech professionals with an in-depth understanding of U.S. Patent 8,685,980. Strategic decisions should integrate this insight with comprehensive legal, technical, and market evaluations.

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Drugs Protected by US Patent 8,685,980

Applicant Tradename Generic Name Dosage NDA Approval Date TE Type RLD RS Patent No. Patent Expiration Product Substance Delist Req. Patented / Exclusive Use Submissiondate
Novartis KISQALI ribociclib succinate TABLET;ORAL 209092-001 Mar 13, 2017 RX Yes Yes ⤷  Get Started Free ⤷  Get Started Free Y Y ⤷  Get Started Free
Novartis KISQALI FEMARA CO-PACK (COPACKAGED) letrozole; ribociclib succinate TABLET;ORAL 209935-001 May 4, 2017 RX Yes Yes ⤷  Get Started Free ⤷  Get Started Free Y 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: 8,685,980

PCT Information
PCT FiledAugust 20, 2009PCT Application Number:PCT/EP2009/060793
PCT Publication Date:February 25, 2010PCT Publication Number: WO2010/020675

International Family Members for US Patent 8,685,980

Country Patent Number Estimated Expiration Supplementary Protection Certificate SPC Country SPC Expiration
European Patent Office 2331547 ⤷  Get Started Free 300909 Netherlands ⤷  Get Started Free
European Patent Office 2331547 ⤷  Get Started Free PA2017039 Lithuania ⤷  Get Started Free
European Patent Office 2331547 ⤷  Get Started Free CR 2017 00060 Denmark ⤷  Get Started Free
European Patent Office 2331547 ⤷  Get Started Free 122017000102 Germany ⤷  Get Started Free
>Country >Patent Number >Estimated Expiration >Supplementary Protection Certificate >SPC Country >SPC Expiration

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