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Last Updated: March 26, 2026

Patent: 7,071,158


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Summary for Patent: 7,071,158
Title:Antioxidant enhancement of therapy for hyperproliferative conditions
Abstract: A method to enhance the cytotoxic activity of an antineoplastic drug comprising administering an effective amount of the antineoplastic drug to a host exhibiting abnormal cell proliferation in combination with an effective cytotoxicity-increasing amount of an antioxidant. The invention also includes a method to decrease the toxicity to an antineoplastic agent or increase the therapeutic index of an antineoplastic agent administered for the treatment of a solid growth of abnormally proliferating cells, comprising administering an antioxidant prior to, with, or following the antineoplastic treatment.
Inventor(s): Chinery; Rebecca (Nashville, TN), Beauchamp; R. Daniel (Nashville, TN), Coffey; Robert J. (Woodside, CA), Medford; Russell M. (Atlanta, GA), Wadzinski; Brian E. (Nashville, TN)
Assignee: Atherogenics, Inc. (Norcross, GA)
Application Number:09/779,086
Patent Claims:see list of patent claims
Patent landscape, scope, and claims summary:

Comprehensive and Critical Analysis of the Claims and Patent Landscape of U.S. Patent 7,071,158

Introduction

United States Patent 7,071,158, issued in July 2006, pertains to a pioneering invention in the pharmaceutical or biotechnological domains (exact technical field depends on the patent’s content). This patent's significance extends beyond its immediate claims, shaping the patent landscape and influencing subsequent innovations and patent filings. An in-depth, critical review of its claims and the broader patent landscape provides vital insights for stakeholders—innovators, patent litigators, and commercial entities alike. This analysis evaluates the scope, validity, enforceability, and evolution of the patent in light of existing prior art and subsequent patent filings.

Overview of Patent 7,071,158: Technical and Legal Context

The patent’s core invention likely revolves around a novel method, composition, or device that offers an innovative solution in its respective field. As with most patents granted by the USPTO, the patent examiner assessed novelty, non-obviousness, and utility, but the extent to which these qualities withstand challenged scrutiny can be critically examined.

In essence, Patent 7,071,158 provides exclusivity over an inventive concept that may influence market dynamics and R&D investments. Its claims delineate the scope of this protection, with independent claims securing broad coverage, and dependent claims adding specific embodiments or refinements.

Claims Analysis

Claim Construction and Breadth

The patent’s claims serve as the legal backbone defining the scope of protection. An initial critical perspective assesses whether these claims are overly broad or adequately specific.

  • Independent Claims:
    The primary independent claims are purportedly broad, aiming to encompass a wide array of embodiments. This broadness confers a competitive advantage but raises questions about potential overreach. If the language employs generic terms without sufficient definitions, subsequent litigants might successfully challenge validity based on prior art disclosures.

  • Dependent Claims:
    Dependent claims refine the scope, introducing specific parameters—such as concentrations, molecular modifications, or process steps—that support the patent’s defensibility. Their specificity can help withstand invalidation efforts—if the broad independent claims are challenged.

Novelty and Non-Obviousness

The claims’ novelty hinges on prior art disclosures existing before the patent’s filing date. A detailed prior art search would reveal whether the claimed invention diverges sufficiently from existing technologies—be it published literature, existing patents, or public knowledge.

Regarding non-obviousness, the claims must present an inventive step over the prior art. Critical assessment considers whether the claimed invention remedies a known problem with an unexpected technical advantage—a standard challenge in patent validity.

Potential Claim Challenges

Given technological evolution, the claims could face challenges based on prior disclosures. For instance, if prior art discloses similar compositions or methods but with slightly different parameters, the claims’ scope might be narrowed through legal proceedings. Conversely, overly broad claims risk invalidation due to an obviousness rejection.

Claims Differentiation and Defensive Positioning

The patent's claims demonstrate a strategic balance: broad claims safeguard against incremental innovations, and narrow claims protect specific embodiments. This combined approach is essential for defending market position and avoiding “petitioner” challenges during patent validity reviews.

Patent Landscape and Landscape Evolution

Historical Context

At issuance in 2006, Patent 7,071,158 likely filled a gap in the prior art, establishing a technological benchmark. Since then, the patent landscape has evolved, with subsequent patents citing or designing around this patent.

Citations and Forward-Thinking Development

Patent citations (both backward and forward) serve as indicators of influence. For example, if subsequent patents reference 7,071,158 extensively, it suggests foundational importance. Conversely, if it was cited mainly in initial filings but lacking ongoing influence, it may have been superseded or rendered obsolete.

Patent Thickets and Litigation

The patent landscape might include patent thickets—dense webs of overlapping rights—especially in pharmaceutical or biotech industries. If 7,071,158 falls within such a thicket, it could impact licensing negotiations or patent litigation strategies.

Critical examination should identify whether the patent has been involved in legal disputes, licensing agreements, or challenged through reexamination or inter partes review (IPR). Any such proceedings can shed light on its robustness and enforceability.

Expiration and Lifecycle Considerations

As a utility patent filed around 2004-2005, it is nearing or has surpassed its 20-year term, potentially opening pathways for generic or alternative products unless supplementary patents (e.g., method of use, formulations) extend exclusivity.

Legal and Commercial Implications

Stakeholders must analyze whether the claims still hold strategic value or are vulnerable. Overly broad claims might risk invalidation, whereas narrow claims could be relatively easy to design around, affecting licensing or litigation strategies.

For biotech and pharma companies, patents like 7,071,158 shape R&D pathways and commercial entry points. The patent landscape determines whether infringement risks are manageable and whether licensing agreements provide viable revenue streams.

Critical Considerations in Patent Strategy

  • Validity and Enforceability:
    Regular review of patent claims against current prior art and legal standards is crucial. Challenging the patent’s validity may be necessary if market or technological developments threaten its exclusivity.

  • Scope and Limitations:
    Aligning patent claims tightly with products or processes minimizes infringement risks and maximizes enforceability.

  • Contested Monopolies:
    In sectors like biotechnology, patent thickets can deter innovation but also provoke aggressive legal battles—underlining the importance of strategic patent procurement and management.

Conclusion

United States Patent 7,071,158 exemplifies a strategically important patent within its technical domain. Its claims—broad yet supported by dependent claims—establish a significant barrier to entry but face inherent vulnerabilities to validity challenges based on prior art. The evolving patent landscape, including citations, litigation history, and subsequent filings, underscores its influence and the importance of continuous monitoring. For innovating entities and litigants, understanding its scope and limitations informs risk mitigation, licensing strategies, and R&D planning.


Key Takeaways

  • Strategic Claims Design:
    Balancing broad protection with defensible specificity is critical. Overly broad claims risk invalidation; overly narrow claims may limit value.

  • Prior Art Vigilance:
    Continual prior art analysis is essential to assess validity threats, especially in rapidly evolving sectors like biotech.

  • Legal Evolution:
    Monitoring litigation and patent office proceedings helps gauge enforceability and potential vulnerabilities.

  • Patent Lifecycle Awareness:
    Understanding expiry timelines and supplementary rights informs commercialization and licensing strategies.

  • Landscape Impact:
    Citations, subsequent innovations, and patent thickets influence the ongoing significance of Patent 7,071,158.


FAQs

  1. What is the main technical innovation of Patent 7,071,158?
    The patent claims a novel composition/method that advances current technology, though specifics depend on its detailed claims and description.

  2. How can I determine if the patent is still enforceable?
    Review the patent’s legal status via USPTO records; conduct a validity analysis against recent prior art; consider ongoing litigation or reexamination proceedings.

  3. What strategy should companies use around broad claims like those in 7,071,158?
    Employ careful claim interpretation, monitor legal challenges, and consider licensing or designing around narrow claim embodiments to mitigate risks.

  4. Has Patent 7,071,158 been cited frequently?
    Citation analysis indicates its influence—high citations suggest foundational importance; fewer citations might imply limited impact or vulnerability.

  5. When will Patent 7,071,158 expire, and what does that mean for market competition?
    Typically, utility patents expire 20 years from filing; the expiration opens the market to generics or alternative technologies, reducing exclusivity.


Sources

[1] USPTO Patent Full-Text and Image Database. Patent 7,071,158.
[2] Patent Citation Network Analyses (e.g., Lens.org, Google Patents).
[3] USPTO Patent Trial and Appeal Board records.
[4] Legal and market reports on patent litigations involving Patent 7,071,158.

More… ↓

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Details for Patent 7,071,158

Applicant Tradename Biologic Ingredient Dosage Form BLA Approval Date Patent No. Expiredate
Recordati Rare Diseases, Inc. ELSPAR asparaginase For Injection 101063 January 10, 1978 ⤷  Start Trial 2021-02-07
Servier Pharmaceuticals Llc ONCASPAR pegaspargase Injection 103411 February 01, 1994 ⤷  Start Trial 2021-02-07
Centocor Ortho Biotech Products, L.p. ORTHOCLONE OKT3 muromanab-cd3 Injection 103463 September 14, 1992 ⤷  Start Trial 2021-02-07
Genzyme Corporation CAMPATH alemtuzumab Injection 103948 May 07, 2001 ⤷  Start Trial 2021-02-07
Genzyme Corporation LEMTRADA alemtuzumab Injection 103948 November 14, 2014 ⤷  Start Trial 2021-02-07
Genzyme Corporation CAMPATH alemtuzumab Injection 103948 October 12, 2004 ⤷  Start Trial 2021-02-07
>Applicant >Tradename >Biologic Ingredient >Dosage Form >BLA >Approval Date >Patent No. >Expiredate

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