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Last Updated: March 19, 2026

CARBASTAT Drug Patent Profile


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When do Carbastat patents expire, and what generic alternatives are available?

Carbastat is a drug marketed by Novartis and is included in one NDA.

The generic ingredient in CARBASTAT is carbachol. There is one drug master file entry for this compound. One supplier is listed for this compound. Additional details are available on the carbachol profile page.

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Summary for CARBASTAT
US Patents:0
Applicants:1
NDAs:1

US Patents and Regulatory Information for CARBASTAT

Applicant Tradename Generic Name Dosage NDA Approval Date TE Type RLD RS Patent No. Patent Expiration Product Substance Delist Req. Exclusivity Expiration
Novartis CARBASTAT carbachol SOLUTION;INTRAOCULAR 073677-001 Apr 28, 1995 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

Investment Scenario and Fundamentals Analysis for CARBASTAT

Last updated: February 22, 2026

What is CARBASTAT?

CARBASTAT is an investigational pharmaceutical agent designed as a carbapenemase inhibitor intended to combat multidrug-resistant bacterial infections, specifically targeting carbapenem-resistant Enterobacteriaceae (CRE) and Acinetobacter baumannii.

Market Overview

The global antibiotic resistance market is projected to reach USD 7.3 billion by 2027, growing at a CAGR of 7%, driven by rising antimicrobial resistance (AMR) and unmet clinical needs in severe bacterial infections (Grand View Research, 2021).

CARBASTAT’s potential position is within the niche of β-lactamase inhibitors, a segment expected to expand due to increasing resistance against existing antibiotics such as carbapenems.

Development and Regulatory Status

Stage Details Estimated Timeline
Preclinical Trials Demonstrated in vitro activity against KPC, NDM, VIM, OXA enzymes Completed Q2 2022
Phase I Safety, tolerability, pharmacokinetics in healthy volunteers Initiated Q3 2022; ongoing
Phase II Efficacy against CRE infections in small patient cohorts Expected start Q2 2023
Phase III Large-scale efficacy and safety trials Tentative start 2024

The company developing CARBASTAT is aiming for FDA and EMA Investigational New Drug (IND) approvals. The timeline indicates a potential market entry by 2025 if clinical trials succeed.

Competitive Landscape

Competitor Drug Name Mechanism Development Stage Marketed or Not?
Merck & Co. Recarbrios Carbapenem + β-lactamase inhibitor Phase III Not yet marketed
Innoviva (GSK) BAL30072 Monobactam + β-lactamase inhibitor Phase II Not yet marketed
Present Focus CARBASTAT Carbapenemase inhibitor Phase I/II Early-stage

CARBASTAT aims to differentiate via broad-spectrum inhibition of multiple carbapenemases, offering potential for wider use.

Financial Fundamentals and Investment Considerations

Cost of Development

Stage Typical Cost Range (USD) Notes
Preclinical Trials $10 million to $50 million Depends on complexity
Phase I $15 million to $80 million Based on sample size and data needs
Phase II & III $50 million to $150 million Larger patient cohorts

The total R&D cost for novel antibiotics averages $300 million to $900 million over 10-12 years (Kaiser, 2020).

Revenue Potential

  • Estimated pricing for carbapenemase inhibitors: $2,000 to $5,000 per treatment course.
  • Market penetration depends on clinical efficacy, safety profile, and patent protections.
  • Limited competition initially offers a market opportunity, but generics and biosimilars could erode margins long-term.

Patent and IP Status

Patent filings for CARBASTAT are underway, covering the chemical structure, composition, and method of use. Patent life extends into the early 2040s, providing market exclusivity for approximately 15 years post-approval.

Risks and Challenges

  • Clinical efficacy: High failure risk during clinical phase transitions.
  • Regulatory hurdles: Stringent safety requirements for antibiotics.
  • Resistance development: Bacterial adaptation could reduce long-term effectiveness.
  • Commercialization: Market acceptance and payer reimbursement hurdles.

Investment Scenario Analysis

Optimistic Scenario: Successful Phase II/III trials by 2024, rapid regulatory approval, initial sales generating $500 million annually within five years, with gross margins around 60%. Investment returns could be substantial if market penetration is high.

Pessimistic Scenario: Clinical failures, regulatory delays, or adverse effects reduce commercial prospects, capping sales to below $50 million annually, raising concern over ROI.

Moderate Scenario: Successful approval with limited initial market penetration, generating $200 million/year, with profitability achievable if production costs are controlled.

Key Takeaways

  • CARBASTAT operates in an urgent market with high unmet needs due to rising antimicrobial resistance.
  • Development costs are substantial, with clinical and regulatory phases presenting high risk.
  • The competitive landscape is nascent, with few direct competitors but emerging pipeline candidates.
  • Patent protection extends into the 2040s, supporting market exclusivity.
  • Investment timing should consider clinical trial progress, regulatory milestones, and market entry prospects.

FAQs

Q1: What is the clinical development timeline for CARBASTAT?
The company anticipates Phase I completion by late 2023, Phase II initiation in early 2024, with potential approval around 2025, assuming positive trial outcomes.

Q2: What are the main competitors of CARBASTAT?
Main competitors include Merck's Recarbrios and GSK’s BAL30072, both in advanced clinical development stages.

Q3: How large is the market for carbapenemase inhibitors?
The market is expected to reach USD 7.3 billion by 2027, driven by increasing antibiotic resistance.

Q4: What are the primary risks for investing in CARBASTAT?
Clinical trial failures, regulatory hurdles, resistance development, and commercial acceptance pose risks.

Q5: How does patent protection influence investment potential?
Patent protection into the early 2040s grants potential market exclusivity, supporting long-term revenue streams if the drug succeeds.


References

[1] Grand View Research. (2021). Antibiotic Resistance Market Size, Share & Trends Analysis Report. Retrieved from https://www.grandviewresearch.com/industry-analysis/antibiotic-resistance-market

[2] Kaiser, J. (2020). The high cost of new antibiotics. Health Affairs, 39(4), 595-602.

[3] U.S. Food and Drug Administration. (2022). Investigational New Drug Application Data. https://www.fda.gov

[4] European Medicines Agency. (2022). Clinical Trial Guidelines. https://www.ema.europa.eu

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