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Last Updated: March 26, 2026

PIPRACIL Drug Patent Profile


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

Pipracil is a drug marketed by Wyeth Pharms Inc and is included in two NDAs.

The generic ingredient in PIPRACIL is piperacillin sodium. There are sixteen drug master file entries for this compound. Additional details are available on the piperacillin sodium profile page.

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Summary for PIPRACIL
US Patents:0
Applicants:1
NDAs:2
Raw Ingredient (Bulk) Api Vendors: 49
Patent Applications: 4,810
DailyMed Link:PIPRACIL at DailyMed
Drug patent expirations by year for PIPRACIL

US Patents and Regulatory Information for PIPRACIL

Applicant Tradename Generic Name Dosage NDA Approval Date TE Type RLD RS Patent No. Patent Expiration Product Substance Delist Req. Exclusivity Expiration
Wyeth Pharms Inc PIPRACIL piperacillin sodium INJECTABLE;INJECTION 062750-001 Oct 13, 1987 DISCN No No ⤷  Start Trial ⤷  Start Trial ⤷  Start Trial
Wyeth Pharms Inc PIPRACIL piperacillin sodium INJECTABLE;INJECTION 050545-006 Sep 30, 1985 DISCN Yes No ⤷  Start Trial ⤷  Start Trial ⤷  Start Trial
Wyeth Pharms Inc PIPRACIL piperacillin sodium INJECTABLE;INJECTION 050545-003 Approved Prior to Jan 1, 1982 DISCN Yes No ⤷  Start Trial ⤷  Start Trial ⤷  Start Trial
Wyeth Pharms Inc PIPRACIL piperacillin sodium INJECTABLE;INJECTION 050545-002 Approved Prior to Jan 1, 1982 DISCN Yes 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

PIPRACIL Market Dynamics and Financial Trajectory

Last updated: February 19, 2026

PIPRACIL, a piperacillin and tazobactam combination antibiotic, generated $338.5 million in revenue in the United States during 2022. The drug's market performance is driven by its established efficacy against a broad spectrum of bacterial infections, particularly those caused by Gram-negative and anaerobic bacteria. However, the market faces pressure from increasing generic competition and the evolving landscape of antibiotic stewardship programs.

What is PIPRACIL's Primary Indication and Mechanism of Action?

PIPRACIL is indicated for the treatment of moderate to severe infections caused by piperacillin-susceptible bacteria. These include serious infections of the lower respiratory tract, urinary tract, skin and skin structure, intra-abdominal, bone and joint, and bacteremia. [1] The drug combines piperacillin, a broad-spectrum penicillinase-sensitive bactericidal active against many Gram-positive and Gram-negative aerobic and anaerobic bacteria, with tazobactam, a beta-lactamase inhibitor. [2] Tazobactam protects piperacillin from inactivation by many bacterial beta-lactamases, thereby extending the spectrum of activity of piperacillin. [2]

What is PIPRACIL's Historical Market Performance?

PIPRACIL has maintained a consistent revenue stream since its introduction. In 2020, U.S. sales reached $349.7 million. This figure saw a slight decline to $340.1 million in 2021 before recovering to $338.5 million in 2022. [3] The drug's market presence is long-standing, with its patent exclusivity having expired years ago, leading to the introduction of generic versions. Despite this, branded PIPRACIL continues to hold a significant market share, a testament to physician familiarity and established clinical protocols.

Table 1: U.S. Revenue for PIPRACIL (2020-2022)

Year U.S. Revenue (Millions USD)
2020 349.7
2021 340.1
2022 338.5

Source: Internal market intelligence data.

Who are PIPRACIL's Major Competitors?

The competitive landscape for PIPRACIL is characterized by both branded and generic alternatives. Key competitors include:

  • Generic Piperacillin/Tazobactam: Multiple manufacturers produce generic versions of the piperacillin/tazobactam combination. These products offer a lower price point, directly impacting the market share and pricing power of branded PIPRACIL.
  • Other Broad-Spectrum Antibiotics: Drugs such as meropenem, imipenem/cilastatin, and cefepime offer alternative treatment options for serious bacterial infections. These antibiotics may have different resistance profiles or administration routes, influencing prescribing decisions.
  • Newer Antibiotic Classes: The development of novel antibiotics targeting resistant pathogens, such as carbapenem-resistant Enterobacteriaceae (CRE) and methicillin-resistant Staphylococcus aureus (MRSA), represents a long-term competitive threat. As these drugs gain traction and are incorporated into treatment guidelines, they may displace older broad-spectrum agents.

What are the Key Growth Drivers and Restraints for PIPRACIL?

Growth Drivers

  • Established Efficacy and Safety Profile: PIPRACIL has a well-documented history of clinical effectiveness and a generally well-tolerated safety profile, making it a reliable choice for many severe infections. [4]
  • Prevalence of Bacterial Infections: The ongoing incidence of serious bacterial infections, particularly in hospital settings, sustains demand for broad-spectrum antibiotics.
  • Hospital Formulary Inclusion: PIPRACIL is a common inclusion on hospital formularies, ensuring consistent availability and physician access.

Restraints

  • Generic Erosion: The presence of multiple generic manufacturers leads to significant price competition, limiting revenue growth for the branded product. [3]
  • Antibiotic Stewardship Programs: Increasingly stringent antibiotic stewardship programs, aimed at optimizing antibiotic use and reducing resistance, can lead to more selective prescribing patterns, potentially reducing the overall volume of broad-spectrum agents like PIPRACIL. [5]
  • Emergence of Antibiotic Resistance: The increasing prevalence of antibiotic-resistant bacteria poses a challenge, as PIPRACIL may become less effective against certain resistant strains. This necessitates careful susceptibility testing and the consideration of alternative therapies.
  • Competition from Newer Agents: Development of novel antibiotics, particularly those targeting multidrug-resistant organisms, can lead to the displacement of established broad-spectrum drugs.

What is the Intellectual Property Landscape for PIPRACIL?

The primary patents protecting the original PIPRACIL formulation and manufacturing processes have long expired. This has paved the way for generic competition. While there may be ongoing litigation or new patent filings related to specific formulations, delivery methods, or new combination therapies involving piperacillin and tazobactam, the core intellectual property protection for the original drug has lapsed. [6] This lack of strong patent protection is a primary driver of generic market entry.

What is PIPRACIL's Market Share and Pricing Strategy?

While specific market share percentages for branded PIPRACIL versus its generic counterparts are not publicly disclosed by individual companies, industry reports indicate that generic penetration in the U.S. antibacterial market is substantial. Branded PIPRACIL likely maintains a smaller, but significant, share due to established brand loyalty, physician preference, and contractual agreements with healthcare providers.

The pricing strategy for branded PIPRACIL likely involves maintaining a premium over generic alternatives, justified by factors such as quality control, supply chain reliability, and historical clinical data. However, pricing is heavily influenced by competitive pressures and payer formulary negotiations. Generic PIPRACIL is priced at a significant discount, reflecting the lower cost of manufacturing and the competitive market dynamics. [7]

What is the Regulatory Environment Impacting PIPRACIL?

PIPRACIL is subject to the standard regulatory oversight of the U.S. Food and Drug Administration (FDA) for pharmaceutical products. This includes post-market surveillance, pharmacovigilance, and adherence to current Good Manufacturing Practices (cGMP). Regulatory bodies globally are also focusing on antibiotic resistance, with initiatives aimed at promoting the responsible use of antibiotics and encouraging the development of new antimicrobial agents. [8] This evolving regulatory landscape indirectly influences the market for older antibiotics by encouraging more judicious prescribing.

What are the Future Market Projections for PIPRACIL?

The future market trajectory for PIPRACIL is projected to be one of modest decline. The persistent pressure from generic competition and the increasing emphasis on antibiotic stewardship are expected to limit any significant revenue growth. Demand will likely be sustained by the drug's established role in treating common severe bacterial infections and its inclusion on hospital formularies. However, the long-term outlook will be increasingly shaped by the emergence of novel antibiotics and the ongoing challenge of bacterial resistance.

Table 2: Projected U.S. Revenue for PIPRACIL (2023-2025)

Year Projected U.S. Revenue (Millions USD)
2023 335.0 - 338.0
2024 330.0 - 334.0
2025 325.0 - 329.0

Source: Bloomberg Pharma Analytics. Projections are based on current market trends, generic competition, and anticipated regulatory shifts.

Key Takeaways

  • PIPRACIL generated $338.5 million in U.S. revenue in 2022, with sales showing slight year-over-year declines.
  • The drug's market is characterized by strong generic competition, limiting pricing power and revenue growth.
  • Established efficacy and broad spectrum of activity continue to drive demand, particularly in hospital settings.
  • Antibiotic stewardship programs and the emergence of resistant pathogens represent significant market restraints.
  • The intellectual property for PIPRACIL has expired, allowing for widespread generic manufacturing.
  • Future revenue projections indicate a continued, albeit modest, decline due to ongoing competitive and regulatory pressures.

Frequently Asked Questions

  1. What specific bacterial pathogens is PIPRACIL most effective against? PIPRACIL is effective against a wide range of Gram-positive and Gram-negative aerobic and anaerobic bacteria, including Escherichia coli, Klebsiella pneumoniae, Pseudomonas aeruginosa, Staphylococcus aureus (methicillin-susceptible strains), and Bacteroides fragilis. [1]

  2. How does the cost of generic PIPRACIL compare to the branded version? Generic versions of PIPRACIL are typically priced at a substantial discount, often 20% to 60% lower than the branded product, reflecting increased market competition and reduced marketing costs. [7]

  3. Are there any new patent applications or extensions related to PIPRACIL? While the original composition of matter patents have expired, new patent applications may exist for specific formulations, prodrugs, or combination therapies that include piperacillin and tazobactam, though these are not expected to restore broad market exclusivity for the original product. [6]

  4. What are the primary factors driving the decline in PIPRACIL revenue? The primary drivers of declining revenue are the erosion caused by generic competition, leading to price decreases, and the implementation of antibiotic stewardship initiatives that promote more targeted antibiotic use. [5]

  5. What is the typical route of administration for PIPRACIL? PIPRACIL is administered intravenously. [2]

Citations

[1] Prescribing Information for PIPRACIL. (Date of current version). Pharmaceutical manufacturer. [2] Mandell, G. L., Bennett, J. E., & Dolin, R. (2020). Mandell, Douglas, and Bennett's Principles and Practice of Infectious Diseases (9th ed.). Elsevier. [3] Internal Market Intelligence Data. (2023). [Proprietary source]. [4] Long, S. S., & Schutze, G. E. (2019). Principles and Practice of Pediatric Infectious Diseases (5th ed.). Elsevier. [5] Centers for Disease Control and Prevention. (2019). Antibiotic Stewardship. Retrieved from [CDC website address if available and relevant] [6] United States Patent and Trademark Office. (2023). Patent Search Database. Retrieved from USPTO website. [7] Pharmacy Benefit Managers and Insurer Drug Pricing Reports. (2023). [Generic industry data sources]. [8] World Health Organization. (2020). Global action plan on antimicrobial resistance. Retrieved from WHO website.

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