biologic

Leqembi IQLIK

lecanemab-irmb

Loss of exclusivityAugust 2037projected — 12-year biologic exclusivity estimate
CompanyEisai, Incorporated

Drug detail

Brand nameLeqembi IQLIK
Active ingredientlecanemab-irmb
Strength360MG/1.8ML (200MG/ML)
Dosage formInjection
RouteSubcutaneous
ModalityBiologic
FDA approvalAugust 2025
Marketing statusRx

Source: FDA Purple Book, layered on the CliffBio company graph. Cliff dates are the projected — 12-year biologic exclusivity estimate; estimates are projections, not legal advice.

Leqembi IQLIK patent cliff — loss of exclusivity August 2037 | CliffBio