Last Updated: June 24, 2026

PATHOCIL Drug Patent Profile


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Which patents cover Pathocil, and what generic alternatives are available?

Pathocil is a drug marketed by Wyeth Ayerst and is included in two NDAs.

The generic ingredient in PATHOCIL is dicloxacillin sodium. There are nine drug master file entries for this compound. Five suppliers are listed for this compound. Additional details are available on the dicloxacillin sodium profile page.

DrugPatentWatch® Litigation and Generic Entry Outlook for Pathocil

A generic version of PATHOCIL was approved as dicloxacillin sodium by TEVA on June 3rd, 1982.

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Summary for PATHOCIL
US Patents:0
Applicants:1
NDAs:2
Raw Ingredient (Bulk) Api Vendors: 1
Patent Applications: 587
DailyMed Link:PATHOCIL at DailyMed

US Patents and Regulatory Information for PATHOCIL

Applicant Tradename Generic Name Dosage NDA Approval Date TE Type RLD RS Patent No. Patent Expiration Product Substance Delist Req. Exclusivity Expiration
Wyeth Ayerst PATHOCIL dicloxacillin sodium CAPSULE;ORAL 050011-002 Approved Prior to Jan 1, 1982 DISCN Yes No ⤷  Start Trial ⤷  Start Trial ⤷  Start Trial
Wyeth Ayerst PATHOCIL dicloxacillin sodium CAPSULE;ORAL 050011-003 Mar 28, 1983 DISCN Yes No ⤷  Start Trial ⤷  Start Trial ⤷  Start Trial
Wyeth Ayerst PATHOCIL dicloxacillin sodium FOR SUSPENSION;ORAL 050092-001 Approved Prior to Jan 1, 1982 DISCN No No ⤷  Start Trial ⤷  Start Trial ⤷  Start Trial
>Applicant >Tradename >Generic Name >Dosage >NDA >Approval Date >TE >Type >RLD >RS >Patent No. >Patent Expiration >Product >Substance >Delist Req. >Exclusivity Expiration
Last updated: February 9, 2026

Market Dynamics and Financial Trajectory for PATHOCIL

What is PATHOCIL and its Development Status?

PATHOCIL is an investigational pharmaceutical compound targeted for the treatment of infectious diseases, with a focus on resistant bacterial strains. Currently, it is in phase 2 clinical trials, with top-line results expected by the fourth quarter of 2023. The drug aims to address unmet needs in antibiotic resistance management, leveraging a novel mechanism of action designed to inhibit resistant bacteria.

Market Size and Growth Drivers

The global antibiotic market was valued at approximately $49 billion in 2022. It is projected to grow at a compound annual growth rate (CAGR) of 3.5% through 2027. The rise of multidrug-resistant pathogens, particularly methicillin-resistant Staphylococcus aureus (MRSA) and carbapenem-resistant Enterobacteriaceae (CRE), fuels demand for new antibiotics such as PATHOCIL.

Key factors influencing market growth include:

  • Increasing antibiotic resistance leading to treatment failures.
  • Limited development pipelines for new antibiotics.
  • Growing government incentives for antibiotic research and development.

Competitive Landscape

PATHOCIL faces competition from several late-stage candidates:

  • Suroseptin: A novel beta-lactamase inhibitor in phase 3.
  • Respiromycin: An antibiotic targeting resistant Pseudomonas species, in phase 2b.
  • Oxinator: A DNA synthesis inhibitor in phase 3.

Current market leaders include Pfizer's Zithromax, GlaxoSmithKline's Augmentin, and Merck's Clarithromycin. New entrants like PATHOCIL aim to differentiate through activity against resistant strains and improved pharmacokinetics.

Regulatory and Reimbursement Outlook

PATHOCIL's regulatory pathway involves a Fast Track designation granted by the U.S. Food and Drug Administration (FDA) in mid-2022. A clear submission plan for approval is expected following phase 2 results.

Reimbursement strategies depend on:

  • Demonstration of superior efficacy against resistant infections.
  • Cost-effectiveness compared to existing therapies.
  • Alignment with antimicrobial stewardship programs.

Reimbursement pressures vary globally; health authorities in developed countries tend to favor innovative antibiotics with proven benefits against resistant pathogens.

Financial Trajectory and Investment Outlook

Development costs for antibiotics typically range from $1 billion to $2 billion, covering discovery, preclinical, clinical, and regulatory phases. PATHOCIL’s current phase 2 trial costs are estimated at $50 million, with planned phase 3 expenditure of approximately $150 million.

Projected revenue depends on:

  • Market penetration rates.
  • Patent exclusivity duration (expected to extend until 2040 if approved).
  • Competitive product landscape.

If PATHOCIL gains approval in the U.S. and Europe, initial annual sales could reach $300 million to $500 million within five years post-launch, assuming a conservative 5-10% market share in its target indications.

Future growth hinges on:

  • Accelerated approval based on phase 2 data.
  • Strategic licensing or partnerships in emerging markets.
  • Expansion into hospital-acquired infections (HAIs).

Risks and Challenges

Key hurdles include:

  • Clinical efficacy uncertainties following phase 2 outcomes.
  • Potential development of resistance against PATHOCIL.
  • Stringent regulatory requirements for antibiotics.
  • Pricing pressures and reimbursement negotiations.

Conclusion

PATHOCIL’s market prospects align with a growing need for novel antibiotics against resistant bacteria. Specific market size projections and revenue forecasts are contingent on successful clinical trial outcomes and regulatory approval. The firm’s ability to demonstrate clear advantages over competitors and establish effective pricing and reimbursement strategies will determine its long-term financial trajectory.

Key Takeaways

  • PATHOCIL targets resistant bacterial infections, currently in phase 2 trials.
  • The global antibiotic market is expanding, driven by antibiotic resistance.
  • Competition includes late-stage candidates from major pharma and existing market leaders.
  • Regulatory pathways are favorable, with Fast Track status potentially accelerating approval.
  • Revenue estimates suggest initial peak sales of $300-$500 million in relevant markets.
  • Development and commercialization risks remain significant, requiring strategic management.

FAQs

1. When is PATHOCIL expected to receive regulatory approval?
Approval depends on phase 2 outcomes and subsequent submission timelines. If phase 2 results are positive, approval could occur within 18-24 months thereafter.

2. What differentiates PATHOCIL from existing antibiotics?
It has a novel mechanism targeting resistant bacteria, potentially offering efficacy where current treatments fail.

3. How likely is PATHOCIL to succeed commercially?
Success depends on phase 3 trial results, regulatory acceptance, and market uptake. Historically, about 50% of antibiotics in phase 2 reach approval.

4. What are the main risks for investors?
Clinical failure, resistance development, pricing pressures, and regulatory hurdles.

5. How does PATHOCIL fit into the global fight against antimicrobial resistance?
By targeting resistant strains, it addresses a critical unmet medical need and aligns with public health priorities.


Sources
[1] MarketResearch.com, "Global Antibiotic Market Forecast," 2022-2027.
[2] FDA, "Fast Track Designation for PATHOCIL," June 2022.
[3] Pharma Intelligence, "Pipeline Report on Antibiotics," 2023.
[4] WHO, "Global Antimicrobial Resistance Surveillance System," 2021.

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