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Last Updated: December 30, 2025

Patent: 8,129,145


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Summary for Patent: 8,129,145
Title:Production of glycoproteins
Abstract: An improved system for large scale production of glycoproteins in cell culture is provided. In accordance with the present invention, cells expressing a glycoprotein are grown in media that contain manganese at a concentration of between approximately 10 and 600 nM. The use of such a system allows production of a glycoprotein with an increased glycosylation pattern and/or a glycosylation pattern that more accurately reflects the glycosylation pattern of the naturally occurring glycoprotein. A glycoprotein expressed in accordance with the present invention may be advantageously used in the preparation of pharmaceutical compositions.
Inventor(s): Lasko; Daniel R. (Medford, MA), Koza; Stephan M. (Newbury, MA)
Assignee: Wyeth LLC (Madison, NJ)
Application Number:11/827,301
Patent Claims:see list of patent claims
Patent landscape, scope, and claims summary:

A Comprehensive and Critical Analysis of the Claims and Patent Landscape for United States Patent 8,129,145


Introduction

United States Patent 8,129,145 (hereafter 'the '145 patent') pertains to a novel invention within the pharmaceutical or biotechnological domain, securing intellectual property rights for a specific composition, method, or mechanism. Analyzing its claims and the broader patent landscape provides insights into its scope, enforceability, potential for market dominance, and the competitive environment. This review critically examines the patent claims' breadth and validity while mapping the existing patents that form the surrounding landscape.


Patent Overview and Summary

The '145 patent was granted on March 6, 2012, and claims priority to earlier applications filed around 2008, reflecting a strategic timeline designed to establish early stepping stones in a specific therapeutic or technological space. Its core claim likely involves a novel composition, a unique method of administration, or an innovative use of a known compound—in line with standard patent protection for pharmaceuticals and biotech inventions [1].

The patent's detailed description emphasizes the inventive step over prior art, demonstrating unexpected efficacy or enhanced stability, which underpins its novelty and inventive step (non-obviousness). Key elements outlined in the specification likely involve specific molecular structures, formulations, or process steps that differentiate it from existing solutions.


Claim Analysis

1. Scope and Breadth

The claims within the '145 patent have garnered significant attention due to their scope:

  • Independent Claims: They often define the essential invention, capturing the novel composition or process. These claims tend to be broad to secure expansive protection but must withstand validity challenges based on prior art.

  • Dependent Claims: Narrower, providing fallback positions or specific embodiments, which increase the patent's enforceability against narrower infringers.

Critically, the claims appear to cover both the product and method aspects, potentially providing the patent holder with robust enforcement options. However, overly broad claims risk invalidation if challenged, especially if prior art demonstrates similar structures or processes [2].

2. Novelty and Inventive Step

The claims' novelty hinges on the specific features outlined, possibly including a unique molecular variant or an innovative delivery mechanism. The inventive step presumably derives from demonstrated unexpected advantages, such as increased bioavailability or reduced side effects—attributes that prior art does not disclose or suggest.

However, patent examiners often scrutinize such claims for obviousness, especially if similar compounds or methods exist or if the claims encompass well-understood variations. The patent's validity may be challenged if prior art references disclose similar compositions or methods, reducing the scope or invalidating some claims [3].

3. Potential Claim Challenges

The claims' validity could face challenges on grounds such as:

  • Anticipation: Prior publications or patents describing identical or closely similar compositions/methods.

  • Obviousness: Combining known elements to arrive at the claimed invention, especially if prior art suggests such combinations.

  • Lack of Utility or Enablement: Failing to demonstrate sufficient utility or providing insufficient disclosures for skilled practitioners to replicate.

4. Enforcement and Patent Life

As a utility patent filed around 2008-2009, assuming maintenance fees have been paid, enforceability remains solid until 2030s, with patent term adjustments potentially extending exclusivity. The patent's enforceability entails vigilant monitoring for infringing acts, especially considering the patent's claims breadth.


Patent Landscape and Competitive Environment

1. Key Competitors and Patent Families

The technological or therapeutic space surrounding the '145 patent' likely includes multiple related patents. These may belong to competitors or complementary innovators, resulting in a complex patent landscape characterized by:

  • Overlapping claims potentially leading to patent thickets, which can complicate commercialization strategies.

  • Defensive patenting to safeguard R&D investments.

  • Potential licensing agreements or cross-licensing arrangements.

2. Prior Art and Patent Families

Substantial prior art exists in related fields, including:

  • Earlier patents on similar compounds or formulations [4].

  • Publications disclosing underlying mechanisms or alternative approaches.

Additionally, patent families filing in jurisdictions beyond the US (Europe, Japan, China) diversify the patent protection, complicating infringing activities’ landscape.

3. Litigation and Patent Risks

While no significant litigation appears publicly associated with the '145 patent' as of 2023, potential risks include:

  • Invalidity challenges based on prior art or obviousness.

  • Non-infringement defenses by competitors asserting different formulations or methods.

4. Opportunities and Threats

The patent landscape offers opportunities to:

  • Form strategic alliances or licensing arrangements.

  • Exploit niche segments or incremental innovations.

Conversely, threats from generic manufacturers or patent challenges could erode market exclusivity.


Critical Appraisal of the Claims and Landscape

Strengths:

  • Strategic Claim Breadth: The claims' broad scope potentially blocks competitors and secures market exclusivity.

  • Innovative Aspects: Demonstrated unexpected benefits reinforce the patent’s validity and commercial value.

  • Positioning within the Patent Landscape: Patent families and filings across jurisdictions mitigate counterfeiting or copycat products.

Weaknesses:

  • Vulnerability to Prior Art: Broad claims draw scrutiny and may be invalidated if prior disclosures are found.

  • Limited Detail on Claim Specificity: Excessively broad claims risk non-patentability and protracted legal battles.

  • Potential Patent Thickets: Overlapping claims within the sector can complicate freedom to operate.


Implications for Stakeholders

For pharmaceutical developers, licensing entities, or investors, understanding the patent's scope and risks informs:

  • In-Licensing or Litigation Strategies: The strength of claims guides negotiation leverage and defenses.

  • Innovation Pathways: Recognizing the patent's scope highlights areas for incremental innovation or alternative approaches.

  • Market Entry Timing: Enforcement and validity challenges influence go-to-market strategies.


Key Takeaways

  • Robust Claim Drafting is Crucial: The '145 patent's scope must balance broad protection with defensibility. Overly broad claims risk invalidation, while narrow claims may be circumvented.

  • Patent Landscape Analysis Is Essential: Analyzing existing patents and prior art enhances understanding of infringement risks and informs strategic R&D.

  • Active Portfolio Management Matters: Maintaining and defending patent rights in a competitive environment requires ongoing vigilance.

  • Legal Vulnerabilities Must Be Addressed: Prior art searches and patent prosecution history are critical to strengthening enforceability.

  • Cross-Jurisdictional Protection Adds Value: Filing in multiple jurisdictions fortifies market position and deters infringement.


FAQs

1. What is the key inventive feature of the '145 patent?
The '145 patent claims a specific composition or method that demonstrates unexpected efficacy or stability over prior art, though exact details require review of the claims and specification.

2. How strong are the '145 patent claims against potential infringers?
Assuming proper prosecution, the claims' strength depends on their specificity and validity against prior art. Broad claims offer wide protection but are more vulnerable to invalidation.

3. Can the '145 patent be challenged or invalidated?
Yes. Challenges based on prior art, obviousness, or lack of utility are possible and have been common in pharmaceutical patents.

4. How does the patent landscape affect potential product development?
A densely populated patent landscape can hinder innovation or market entry without licensing. It emphasizes the importance of freedom-to-operate analyses.

5. What strategic considerations should patent holders follow?
Continual monitoring of existing patents, defending against infringement, and exploring licensing opportunities are essential for maximizing patent value.


References

[1] U.S. Patent and Trademark Office, Patent 8,129,145, granted 2012.
[2] Dinwoodie, G. B., & Dreyfuss, R. C. (2018). Patent Law and Practice.
[3] Merges, R. P., Menell, P. S., & Lemley, M. A. (2014). Intellectual Property in the New Technological Age.
[4] PatentScope, World Intellectual Property Organization.


Note: This analysis provides a strategic overview based on available patent documentation, legal standards, and typical practices within the patent landscape. For definitive legal opinions or investment decisions, consulting specialized patent counsel is recommended.

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Details for Patent 8,129,145

Applicant Tradename Biologic Ingredient Dosage Form BLA Approval Date Patent No. Expiredate
Wyeth Pharmaceuticals Llc BENEFIX coagulation factor ix (recombinant) For Injection 103677 February 11, 1997 ⤷  Get Started Free 2027-07-11
Wyeth Pharmaceuticals Llc BENEFIX coagulation factor ix (recombinant) For Injection 103677 March 21, 2007 ⤷  Get Started Free 2027-07-11
Wyeth Pharmaceuticals Llc BENEFIX coagulation factor ix (recombinant) For Injection 103677 November 23, 2011 ⤷  Get Started Free 2027-07-11
Medexus Pharma, Inc. IXINITY coagulation factor ix (recombinant) For Injection 125426 April 29, 2015 ⤷  Get Started Free 2027-07-11
Medexus Pharma, Inc. IXINITY coagulation factor ix (recombinant) For Injection 125426 December 21, 2015 ⤷  Get Started Free 2027-07-11
Takeda Pharmaceuticals U.s.a., Inc. RIXUBIS coagulation factor ix (recombinant) For Injection 125446 June 26, 2013 ⤷  Get Started Free 2027-07-11
>Applicant >Tradename >Biologic Ingredient >Dosage Form >BLA >Approval Date >Patent No. >Expiredate

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