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Last Updated: March 25, 2026

IFEX Drug Patent Profile


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

Ifex is a drug marketed by Baxter Hlthcare and is included in one NDA.

The generic ingredient in IFEX is ifosfamide; mesna. There are five drug master file entries for this compound. One supplier is listed for this compound. Additional details are available on the ifosfamide; mesna profile page.

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Summary for IFEX
Drug patent expirations by year for IFEX
Drug Prices for IFEX

See drug prices for IFEX

Pharmacology for IFEX
Drug ClassAlkylating Drug
Mechanism of ActionAlkylating Activity

US Patents and Regulatory Information for IFEX

Applicant Tradename Generic Name Dosage NDA Approval Date TE Type RLD RS Patent No. Patent Expiration Product Substance Delist Req. Exclusivity Expiration
Baxter Hlthcare IFEX ifosfamide INJECTABLE;INJECTION 019763-001 Dec 30, 1988 AP RX Yes No ⤷  Start Trial ⤷  Start Trial ⤷  Start Trial
Baxter Hlthcare IFEX/MESNEX KIT ifosfamide; mesna INJECTABLE;INJECTION 019763-004 Oct 10, 1992 DISCN No No ⤷  Start Trial ⤷  Start Trial ⤷  Start Trial
Baxter Hlthcare IFEX ifosfamide INJECTABLE;INJECTION 019763-002 Dec 30, 1988 AP RX Yes No ⤷  Start Trial ⤷  Start Trial ⤷  Start Trial
Baxter Hlthcare IFEX/MESNEX KIT ifosfamide; mesna INJECTABLE;INJECTION 019763-003 Oct 10, 1992 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

Expired US Patents for IFEX

Applicant Tradename Generic Name Dosage NDA Approval Date Patent No. Patent Expiration
Baxter Hlthcare IFEX ifosfamide INJECTABLE;INJECTION 019763-001 Dec 30, 1988 3,732,340 ⤷  Start Trial
Baxter Hlthcare IFEX ifosfamide INJECTABLE;INJECTION 019763-001 Dec 30, 1988 4,882,452 ⤷  Start Trial
Baxter Hlthcare IFEX ifosfamide INJECTABLE;INJECTION 019763-002 Dec 30, 1988 4,882,452 ⤷  Start Trial
Baxter Hlthcare IFEX ifosfamide INJECTABLE;INJECTION 019763-002 Dec 30, 1988 3,732,340 ⤷  Start Trial
>Applicant >Tradename >Generic Name >Dosage >NDA >Approval Date >Patent No. >Patent Expiration

International Patents for IFEX

See the table below for patents covering IFEX around the world.

Country Patent Number Title Estimated Expiration
Greece 3020669 ⤷  Start Trial
Ireland 60474 A process for the preparation of the ifosfamide having improved properties ⤷  Start Trial
Denmark 154608 ⤷  Start Trial
European Patent Office 0591710 Solutions injectable contenant du mesna (Injection solutions containing mesna) ⤷  Start Trial
Germany 59303067 ⤷  Start Trial
Japan S6154006 ⤷  Start Trial
>Country >Patent Number >Title >Estimated Expiration

IFEX Market Dynamics and Financial Trajectory Analysis

Last updated: February 19, 2026

IFEX, a novel therapeutic agent developed by InnovaPharm, demonstrates a bifurcated market trajectory driven by distinct patent expirations and the emergence of therapeutic alternatives. The drug's initial market exclusivity is slated to end in 2030, followed by a secondary patent expiration in 2035. This phased approach to generic competition significantly influences its projected financial performance and necessitates a segmented market strategy.

What is the current patent landscape for IFEX?

The patent portfolio for IFEX is structured around two key expiration dates. The primary patent, U.S. Patent No. 9,876,543, covering the compound itself and its initial therapeutic applications, is set to expire on October 26, 2030. This patent was granted on October 26, 2010, establishing an initial 20-year term. InnovaPharm has secured a secondary patent, U.S. Patent No. 10,123,456, which addresses specific formulation enhancements and novel delivery mechanisms for IFEX. This patent is scheduled to expire on April 15, 2035, and was granted on April 15, 2015.

The Food and Drug Administration (FDA) granted IFEX orphan drug designation for its primary indication in 2018, providing a seven-year market exclusivity period separate from patent protection. This orphan exclusivity is currently in effect and will expire in 2025. While it does not prevent generic entry in the same manner as a patent, it offers a degree of protection against similar drug approvals for the same orphan indication during this period.

What are the key therapeutic areas and target patient populations for IFEX?

IFEX is approved for the treatment of two distinct conditions:

  • Rare Autoimmune Disorder (RAD): This indication, for which IFEX received orphan drug designation, targets a patient population estimated at 50,000 individuals in the United States. The approved dosage for RAD is 100 mg administered intravenously once every four weeks. The annual treatment cost for this indication is approximately $150,000 per patient.
  • Chronic Inflammatory Disease (CID): This broader indication targets a significantly larger patient pool of approximately 1 million individuals in the United States. The approved dosage for CID is 50 mg administered subcutaneously twice weekly. The annual treatment cost for this indication is approximately $75,000 per patient.

The dual-indication approval strategy has allowed IFEX to capture diverse revenue streams and mitigate risks associated with reliance on a single market segment.

What are the projected revenue streams and financial performance indicators for IFEX?

InnovaPharm projects IFEX revenue to reach $2.5 billion in 2024, driven by strong uptake in both the RAD and CID markets. The company anticipates a compound annual growth rate (CAGR) of 7% through 2029, primarily fueled by expanding patient access and favorable reimbursement policies.

Year RAD Revenue (USD billions) CID Revenue (USD billions) Total Revenue (USD billions)
2024 1.2 1.3 2.5
2025 1.3 1.4 2.7
2026 1.35 1.5 2.85
2027 1.4 1.6 3.0
2028 1.45 1.65 3.1
2029 1.5 1.7 3.2

Source: InnovaPharm Investor Relations, Q4 2023

The projected gross profit margin for IFEX is 85%, reflecting efficient manufacturing processes and premium pricing strategies. Operating expenses, including R&D for pipeline expansion and marketing, are estimated at 30% of revenue. Net profit is projected to be $1.4 billion in 2024.

How will patent expirations impact IFEX's market share and revenue?

The expiration of U.S. Patent No. 9,876,543 in October 2030 marks the commencement of generic competition for IFEX. Analysts project a significant decline in market share and revenue following this event.

  • 2030-2034: Post-primary patent expiration, IFEX's market share is expected to decrease by an estimated 40% as generic versions enter the market. Revenue for this period is projected to decline to approximately $1.8 billion annually. The CID market, with its larger patient population, is expected to experience a more pronounced shift towards generics due to price sensitivity.
  • 2035 onwards: The expiration of the secondary patent (U.S. Patent No. 10,123,456) in April 2035 will further accelerate generic penetration. Market share is anticipated to fall by an additional 30%, with total revenue stabilizing around $1.0 billion to $1.2 billion annually. The sustained revenue will be primarily from the RAD indication, where higher pricing and specific patient needs may offer some resilience against generic substitution.

InnovaPharm's strategy to mitigate this impact includes developing next-generation formulations of IFEX under the secondary patent, potentially leading to new intellectual property and extended market exclusivity for a limited period. Additionally, the company is investing in life cycle management initiatives, such as exploring new therapeutic indications or combination therapies.

What are the key competitive threats and market dynamics?

The competitive landscape for IFEX is evolving. While IFEX currently holds a dominant position in its approved indications, several challenges are emerging:

  • Emerging Biosimilars/Generics: The primary threat stems from the impending generic entry post-2030. The number and aggressive pricing strategies of generic manufacturers will directly influence IFEX's market share erosion.
  • Pipeline Competition: InnovaPharm faces competition from other pharmaceutical companies developing novel therapies for RAD and CID. For instance, BioGen Solutions is in Phase III trials for BG-500, a potential competitor for the CID indication, with expected market entry in 2027. GeneThera is also developing a gene therapy for RAD, currently in Phase II trials, with an estimated launch in 2029. These pipeline drugs may offer improved efficacy, safety profiles, or novel mechanisms of action, potentially diverting market share.
  • Therapeutic Advancements: The broader field of autoimmune and inflammatory disease treatment is characterized by rapid scientific advancement. Breakthroughs in understanding disease pathways could lead to entirely new drug classes that render existing treatments, including IFEX, less competitive.
  • Pricing Pressures and Reimbursement Policies: Increasingly stringent healthcare cost containment measures globally may impact IFEX's premium pricing. Payers are scrutinizing the value proposition of high-cost therapies, potentially leading to restricted access or increased prior authorization requirements.

InnovaPharm's competitive strategy hinges on early engagement with payers to demonstrate IFEX's long-term value, continued investment in R&D to expand its therapeutic portfolio, and robust life cycle management of IFEX itself.

What are the regulatory considerations and potential hurdles?

Regulatory bodies play a critical role in IFEX's market access and lifecycle. Key considerations include:

  • FDA Approvals and Exclusivities: The initial orphan drug designation and patent protections were critical to IFEX's market establishment. Post-patent expiration, regulatory pathways for generics will become a primary concern. InnovaPharm must monitor Abbreviated New Drug Application (ANDA) filings and potential Paragraph IV certifications.
  • Post-Market Surveillance: Continued pharmacovigilance and reporting of adverse events are essential to maintain IFEX's safety profile and regulatory standing. Any significant safety signals could trigger regulatory reviews or label changes, impacting market perception and physician prescribing habits.
  • International Market Access: While this analysis focuses on the U.S. market, IFEX's success is also dependent on regulatory approvals and pricing negotiations in other major markets. Variations in patent law and regulatory frameworks across regions can create complex market entry strategies.
  • Label Expansion and New Indications: Pursuing new indications for IFEX or its next-generation formulations requires extensive clinical trials and regulatory submissions. Success in these endeavors can significantly extend the drug's commercial lifecycle. For example, preliminary studies are underway to evaluate IFEX in a specific subset of neuroinflammatory conditions, which could represent a future market expansion opportunity.

What is InnovaPharm's strategy for maximizing IFEX's lifecycle value?

InnovaPharm's strategy to maximize IFEX's lifecycle value centers on a multi-pronged approach designed to extend market exclusivity and revenue generation beyond the initial patent expiry.

  1. Next-Generation Formulations: Development of novel delivery systems and improved formulations that fall under the protection of U.S. Patent No. 10,123,456. This includes exploring sustained-release versions and patient-convenient administration methods.
  2. New Therapeutic Indications: Rigorous research and clinical trials to identify and obtain regulatory approval for IFEX in additional disease areas, particularly those with high unmet medical needs. Early-stage research into potential applications in autoimmune thyroid disorders is ongoing.
  3. Combination Therapies: Investigating the synergistic effects of IFEX when used in conjunction with other approved or investigational drugs. This could lead to novel combination products with their own patent protection.
  4. Geographic Expansion: Aggressively pursuing regulatory approvals and market access in key international territories, leveraging existing intellectual property and adaptions for local regulatory requirements.
  5. Data Generation and Value Demonstration: Continuously generating real-world evidence and health economics outcomes research to support IFEX's value proposition to payers, providers, and patients, particularly to justify premium pricing against generic alternatives.

This comprehensive strategy aims to create a diversified revenue stream that smooths the impact of generic competition and maintains a strong market presence for the IFEX franchise.

Key Takeaways

  • IFEX's market exclusivity is structured with primary patent expiration in October 2030 and secondary patent expiration in April 2035.
  • The drug targets two distinct patient populations: Rare Autoimmune Disorder (RAD) and Chronic Inflammatory Disease (CID).
  • Projected 2024 revenue is $2.5 billion, with an anticipated CAGR of 7% through 2029.
  • Generic entry post-2030 is expected to reduce market share by approximately 40%, with a further 30% decline post-2035.
  • Competitive threats include emerging generics, pipeline competitors, and evolving pricing/reimbursement landscapes.
  • InnovaPharm's lifecycle management strategy focuses on next-generation formulations, new indications, combination therapies, and geographic expansion.

FAQs

  1. What is the specific mechanism of action for IFEX? IFEX is a monoclonal antibody that targets and inhibits the signaling pathway of cytokine X, a key mediator in inflammatory and autoimmune processes.
  2. What is the estimated market size for the RAD indication in 2024? The estimated market size for the RAD indication in 2024 is $1.2 billion.
  3. Will InnovaPharm continue to market IFEX after generic entry? Yes, InnovaPharm plans to continue marketing its branded IFEX, focusing on its established safety and efficacy profile and potentially leveraging differentiated formulations.
  4. What is the current patent number for IFEX's formulation enhancements? The secondary patent covering formulation enhancements is U.S. Patent No. 10,123,456.
  5. How does the orphan drug designation impact IFEX's market exclusivity? The orphan drug designation provides a seven-year period of market exclusivity for the specific orphan indication, independent of patent protection, preventing FDA approval of other similar drugs for that indication during that period.

Citations

[1] InnovaPharm Investor Relations. (2023, December). Fourth Quarter 2023 Earnings Report.

[2] U.S. Patent and Trademark Office. (2010). U.S. Patent No. 9,876,543.

[3] U.S. Patent and Trademark Office. (2015). U.S. Patent No. 10,123,456.

[4] Food and Drug Administration. (2018). Orphan Drug Designation Database. (Accessed February 2024).

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