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Last Updated: December 12, 2025

CINOXACIN Drug Patent Profile


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Which patents cover Cinoxacin, and when can generic versions of Cinoxacin launch?

Cinoxacin is a drug marketed by Teva and is included in two NDAs.

The generic ingredient in CINOXACIN is cinoxacin. There are three drug master file entries for this compound. Additional details are available on the cinoxacin profile page.

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Summary for CINOXACIN
US Patents:0
Applicants:1
NDAs:2
Raw Ingredient (Bulk) Api Vendors: 73
Clinical Trials: 1
DailyMed Link:CINOXACIN at DailyMed
Drug patent expirations by year for CINOXACIN
Recent Clinical Trials for CINOXACIN

Identify potential brand extensions & 505(b)(2) entrants

SponsorPhase
James Graham Brown Cancer CenterEarly Phase 1
Julio RamirezEarly Phase 1
University of LouisvilleEarly Phase 1

See all CINOXACIN clinical trials

Medical Subject Heading (MeSH) Categories for CINOXACIN

US Patents and Regulatory Information for CINOXACIN

Applicant Tradename Generic Name Dosage NDA Approval Date TE Type RLD RS Patent No. Patent Expiration Product Substance Delist Req. Exclusivity Expiration
Teva CINOXACIN cinoxacin CAPSULE;ORAL 073005-001 Feb 28, 1992 DISCN No No ⤷  Get Started Free ⤷  Get Started Free ⤷  Get Started Free
Teva CINOXACIN cinoxacin CAPSULE;ORAL 073006-001 Feb 28, 1992 DISCN No No ⤷  Get Started Free ⤷  Get Started Free ⤷  Get Started Free
>Applicant >Tradename >Generic Name >Dosage >NDA >Approval Date >TE >Type >RLD >RS >Patent No. >Patent Expiration >Product >Substance >Delist Req. >Exclusivity Expiration

Market Dynamics and Financial Trajectory for CINOXACIN

Last updated: July 30, 2025


Introduction

Cinoxacin, a fluoroquinolone antimicrobial agent, is part of a class of broad-spectrum antibiotics primarily utilized to treat urinary tract infections (UTIs), gastrointestinal infections, and skin infections. With rising global antimicrobial resistance (AMR) and evolving regulatory landscapes, understanding the market dynamics and financial trajectory of Cinoxacin is vital for stakeholders, including pharmaceutical companies, investors, and healthcare providers. This analysis delves into contextual market factors, patent trends, regulatory considerations, competitive positioning, and future growth potential relevant to Cinoxacin.


Market Overview and Current Position

Cinoxacin, introduced in the late 1980s, has historically been prescribed for specific bacterial infections owing to its bactericidal activity against Gram-negative and some Gram-positive organisms. Although its market share has diminished relative to newer fluoroquinolones such as ciprofloxacin, levofloxacin, and moxifloxacin, it remains relevant in certain regions with limited access to advanced therapeutics or where generics dominate.

The global antimicrobial market was valued at approximately USD 45 billion in 2022, with the fluoroquinolone segment constituting a significant portion of this value[1]. However, the growth trajectory for Cinoxacin specifically is constrained by patent expiries, safety concerns, and competition from both generic and brand-name drugs.


Market Dynamics Influencing Cinoxacin

Regulatory and Safety Challenges

Increased regulatory scrutiny over fluoroquinolones' safety profile has significantly impacted their use. Reports of adverse effects such as tendinopathy, peripheral neuropathy, and CNS disturbances have led to black box warnings and restricted indications (FDA, 2016). Consequently, prescribers favor newer agents with better safety profiles, shrinking the therapeutic niche for Cinoxacin.

Antimicrobial Resistance and Stewardship

The rising tide of antimicrobial resistance (AMR) challenges the efficacy of fluoroquinolones, including Cinoxacin. Stewardship programs encourage judicious antibiotic use, further limiting prescriptions for older drugs. Regulatory agencies have emphasized responsible use, reducing market potential for drugs like Cinoxacin in some geographies[2].

Patent and Manufacturing Trends

While Cinoxacin’s initial patents have long expired, limiting exclusivity, manufacturing costs for generics remain low, making it less lucrative for developers to seek new formulations or indications. This commoditization pressure causes a declining financial incentive for innovation around Cinoxacin.

Regional Market Variations

Certain regions, notably in Asia, Africa, and Eastern Europe, exhibit higher usage of older antibiotics, including Cinoxacin, often due to lower costs and limited healthcare infrastructure. This regional variability influences overall sales volumes and revenue potential, often making Cinoxacin's market a niche rather than a global blockbuster.


Financial Trajectory and Investment Outlook

Revenue Trends

Historically, Cinoxacin's revenues have declined substantially from peak sales in the late 20th century, with current revenues heavily dependent on generic sales in select markets. The absence of recent patent protections and declining prescribing patterns push revenues into steady, discounted tiers compared to newer, aggressively marketed fluoroquinolones.

Pricing and Reimbursement

The commoditized nature of generic Cinoxacin results in low per-unit pricing. In healthcare systems emphasizing cost containment, reimbursement rates for older antibiotics are minimal, constraining profit margins for manufacturers and disincentivizing further investment.

Market Entry Barriers and Opportunity Cost

Given current trends, opportunities for new formulations or indications for Cinoxacin are limited. Entry barriers are low, but the potential return on investment remains minimal, especially when considering the costs of regulatory compliance and clinical trials for new uses.

Future Growth Projections

Projections suggest a continued decline in Cinoxacin sales over the next decade, primarily driven by the global shift toward newer, safer antibiotics and stricter antimicrobial stewardship. In regions with less regulation and limited access to advanced drugs, modest sales could persist, but overall growth prospects are bleak[3].


Competitive Landscape

Generic Drugs and Market Competition

The primary competitors for Cinoxacin are other generic fluoroquinolones such as ciprofloxacin and levofloxacin, which have broader indications, superior safety profiles, and aggressive marketing. Their widespread availability undermines Cinoxacin's market share.

Emerging Alternatives

Non-fluoroquinolone antibiotics, along with novel antimicrobial agents targeting resistant pathogens, further erode Cinoxacin's relevance. The pipeline of new drugs focusing on pathogens resistant to traditional fluoroquinolones reduces its long-term utility.


Regulatory and Patent Outlook

Since Cinoxacin's patents have expired, the drug exists largely as a generic commodity. Regulatory agencies continue to monitor its safety, but no new approvals or major regulatory developments are anticipated. The expiration of any residual patent rights signals minimal future innovation or repositioning opportunities.


Strategic Considerations for Stakeholders

  • Pharmaceutical Companies: Focus on niche markets where older antibiotics remain in use due to affordability constraints.
  • Investors: Exercise caution given the declining revenue trajectory, low innovation incentives, and regulatory headwinds.
  • Healthcare Payers: Prioritize cost-effective and safer alternatives, further diminishing Cinoxacin's usage.

Key Challenges and Opportunities

Challenges Opportunities
Declining sales due to safety concerns and competition Limited; niche regional use possible in low-resource settings
Regulatory restrictions impacting prescribing Potential for combination therapies or new indications, although unlikely in current landscape
Erosion of market exclusivity and low margins Emphasis on cost containment and generic supply chain stability

Conclusion

Cinoxacin's market dynamics reflect a typical lifecycle trajectory of an older broad-spectrum antibiotic in a landscape increasingly dominated by newer, safer, and more effective agents. Its financial trajectory forecasts continued decline, driven by safety concerns, regulatory restrictions, and intense competition from generics and novel antimicrobials. While regional markets may sustain modest sales, the overarching market environment suggests limited future growth and investment appeal.


Key Takeaways

  • Market Decline: Cinoxacin's global sales are steadily decreasing, primarily due to safety concerns, regulatory restrictions, and competition.
  • Limited Innovation: Expired patents and low profitability limit opportunities for new formulations or indications.
  • Geographical Variability: While widespread use diminishes, some regions with limited access to newer antibiotics may retain niche demand.
  • Strategic Focus: Stakeholders should prioritize cost-effective, region-specific applications rather than pursuing high-investment growth.
  • Future Outlook: The drug's role is likely to diminish further, solidifying its status as a legacy antibiotic.

FAQs

1. What are the primary medical uses of Cinoxacin today?
Cinoxacin is mainly used for urinary tract infections and gastrointestinal infections in regions where newer antibiotics are inaccessible or unaffordable.

2. Why has the clinical use of Cinoxacin declined globally?
Safety concerns, availability of superior fluoroquinolones, regulatory restrictions, and antimicrobial resistance have led to its reduced prescribing.

3. Are there ongoing efforts to develop new formulations of Cinoxacin?
Currently, no significant initiatives exist due to low profitability and limited clinical rationale.

4. How does antimicrobial resistance impact Cinoxacin’s market?
AMR diminishes its effectiveness against resistant pathogens, further reducing its clinical utility.

5. What are the investment prospects for companies involved with Cinoxacin?
Investors should approach with caution; the outlook is bleak given the declining revenues, regulatory challenges, and lack of innovation incentives.


References

[1] Global Antimicrobial Market Data, MarketWatch, 2022.
[2] FDA Drug Safety Communication, 2016.
[3] World Health Organization, 2021 Antimicrobial Resistance Report.

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