Last Updated: November 8, 2026

LERITINE Drug Patent Profile

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When do Leritine patents expire, and when can generic versions of Leritine launch?

Leritine is a drug marketed by Merck and is included in two NDAs.

The generic ingredient in LERITINE is anileridine hydrochloride. There are two drug master file entries for this compound. Additional details are available on the anileridine hydrochloride profile page.

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Summary for LERITINE
US Patents:0
Applicants:1
NDAs:2
Raw Ingredient (Bulk) Api Vendors: 1
Patent Applications: 4,508
DailyMed Link:LERITINE at DailyMed

US Patents and Regulatory Information for LERITINE

Applicant Tradename Generic Name Dosage NDA Approval Date TE Type RLD RS Patent No. Patent Expiration Product Substance Delist Req. Exclusivity Expiration
Merck LERITINE anileridine phosphate INJECTABLE;INJECTION 010520-003 Approved Prior to Jan 1, 1982 DISCN No No ⤷  Start Trial ⤷  Start Trial ⤷  Start Trial
Merck LERITINE anileridine hydrochloride TABLET;ORAL 010585-002 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

LERITINE Market Dynamics and Financial Trajectory (Revenue Drivers, Pricing, Exclusivity, and Competitive Risk)

Last updated: August 1, 2026

What is LERITINE and what does it treat?

No complete, accurate identification of “LERITINE” as a specific FDA-approved drug product is available from the provided context, so market and financial trajectory cannot be reliably mapped.

What is the FDA status of LERITINE (NDA, ANDA, biologics license, Orange Book listings)?

No Orange Book-reconcilable linkage for “LERITINE” can be produced from the provided context, so FDA status and exclusivity cannot be stated.

When does LERITINE lose exclusivity (patent expiry, 180-day exclusivity, pediatric, Hatch-Waxman)?

No authoritative patent or exclusivity schedule for “LERITINE” can be generated from the provided context, so expiration timing and generic entry windows cannot be stated.

What patents protect LERITINE (composition, formulation, method-of-use, manufacturing)?

No defensible patent estate for “LERITINE” can be produced from the provided context, so coverage, strength, and litigation risk cannot be quantified.

What formulation patents and delivery-system protections apply to LERITINE?

No formulation or device/delivery-system IP can be assigned to “LERITINE” from the provided context.

How strong is the patent estate for LERITINE (number of patents, remaining life, litigation history)?

No patent counts, remaining life, or litigation history for “LERITINE” can be provided from the provided context.

Which companies compete with LERITINE and what is the biosimilar or generic risk?

No competitor roster or substitution class for “LERITINE” can be reliably established from the provided context.

What generic entry risks exist for LERITINE (Paragraph IV, first-filer, 505(b)(2) challenges)?

No Paragraph IV or 505(b)(2) activity for “LERITINE” can be stated from the provided context.

What is the pricing and reimbursement landscape for LERITINE (US list price, net price, payer controls)?

No validated product identity, strength, dosage form, or market geography can be established for “LERITINE” from the provided context, so pricing and reimbursement cannot be quantified.

How does LERITINE’s sales trajectory evolve across the lifecycle (launch, growth, plateau, decline)?

No validated product identity or historical sales series for “LERITINE” can be produced from the provided context, so lifecycle timing and revenue slope cannot be stated.

What is the revenue exposure of LERITINE to exclusivity and competitive substitution?

No validated exclusivity dates or competitor substitution for “LERITINE” can be produced from the provided context, so revenue-at-risk cannot be quantified.

LERITINE vs. competitors: how does its efficacy, safety, and positioning affect demand?

No indication-level or active-ingredient-level mapping for “LERITINE” can be produced from the provided context, so comparative positioning cannot be analyzed.

What is the impact of manufacturing and supply chain constraints on LERITINE (capacity, GMP, recalls)?

No validated product identity for “LERITINE” can be produced from the provided context, so supply risk cannot be assessed.

How do settlements and licensing deals shape LERITINE’s market outlook?

No licensing or settlement history for “LERITINE” can be produced from the provided context.

Key Takeaways

  • “LERITINE” cannot be mapped to a specific drug product with sufficient certainty from the provided context to support a factual market and financial trajectory.
  • All downstream analysis required for a professional market view (FDA status, exclusivity timelines, patent estate strength, competitor roster, pricing, revenue-at-risk) depends on product identity and Orange Book/patent linkage, which are not available here.

FAQs

  1. Is LERITINE available in the US under an NDA or ANDA, and does it appear in the Orange Book?
  2. What patent or exclusivity date most constrains generic entry for LERITINE?
  3. Have any Paragraph IV challenges been filed against LERITINE?
  4. What payer policies or reimbursement limits influence net sales for LERITINE?
  5. Which companies are positioned to launch first after exclusivity for LERITINE ends?

References

No sources were cited because “LERITINE” could not be identified to a specific product and regulatory/patent record from the provided context.

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