biologic

Grastek

Timothy Grass Pollen Allergen Extract

Loss of exclusivityApril 2026projected — 12-year biologic exclusivity estimate
CompanyALK - Abello A/S

Drug detail

Brand nameGrastek
Active ingredientTimothy Grass Pollen Allergen Extract
Strength2800BAU/TABLET
Dosage formTablet
RouteSublingual
ModalityBiologic
FDA approvalApril 2014
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.

Grastek patent cliff — loss of exclusivity April 2026 | CliffBio