Pharsight

1. Levoxyl patent expiration

Drug Patent Number	Company	Drug Patent Title	Drug Patent Expiry
These drug patents focus on the other aspects of the active substance like dosage, mode of administration (oral, tablet, capsules, liquids etc).
US6555581	KING PHARMS	Levothyroxine compositions and methods	Feb, 2022 (2 years ago)
US7067148	KING PHARMS	Stabilized pharmaceutical and thyroid hormone compositions and method of preparation	Feb, 2022 (2 years ago)
US7101569	KING PHARMS	Methods of administering levothyroxine pharmaceutical compositions	Oct, 2023 (9 months ago)

Market Authorisation Date: 25 May, 2001

Treatment: Method of use of administering levothyroxine

Dosage: TABLET

Strength	Dosage	Availability
0.2MG **See current Annual Edition, 1.8 Description of Special Situations, Levothyroxine Sodium	TABLET	Prescription
0.1MG **See current Annual Edition, 1.8 Description of Special Situations, Levothyroxine Sodium	TABLET	Prescription
0.125MG **See current Annual Edition, 1.8 Description of Special Situations, Levothyroxine Sodium	TABLET	Prescription
0.3MG Federal Register determination that product was not discontinued or withdrawn for safety or effectiveness reasons	TABLET	Discontinued
0.05MG **See current Annual Edition, 1.8 Description of Special Situations, Levothyroxine Sodium	TABLET	Prescription
0.175MG **See current Annual Edition, 1.8 Description of Special Situations, Levothyroxine Sodium	TABLET	Prescription
0.075MG **See current Annual Edition, 1.8 Description of Special Situations, Levothyroxine Sodium	TABLET	Prescription
0.088MG **See current Annual Edition, 1.8 Description of Special Situations, Levothyroxine Sodium	TABLET	Prescription
0.025MG **See current Annual Edition, 1.8 Description of Special Situations, Levothyroxine Sodium	TABLET	Prescription
0.137MG **See current Annual Edition, 1.8 Description of Special Situations, Levothyroxine Sodium	TABLET	Prescription
0.15MG **See current Annual Edition, 1.8 Description of Special Situations, Levothyroxine Sodium	TABLET	Prescription
0.112MG **See current Annual Edition, 1.8 Description of Special Situations, Levothyroxine Sodium	TABLET	Prescription

Drug Patent Number	Company	Drug Patent Title	Drug Patent Expiry	Activity Alert
These drug patents focus on the other aspects of the active substance like dosage, mode of administration (oral, tablet, capsules, liquids etc).
US5656296	KING PHARMS	Dual control sustained release drug delivery systems and methods for preparing same	Aug, 2014 (9 years ago)

Market Authorisation Date: 31 January, 1996

Treatment: NA

Dosage: TABLET, EXTENDED RELEASE

Strength	Dosage	Availability
500MG	TABLET, EXTENDED RELEASE	Discontinued
1GM	TABLET, EXTENDED RELEASE	Discontinued

Drug Patent Number	Company	Drug Patent Title	Drug Patent Expiry
These drug patents focus on the other aspects of the active substance like dosage, mode of administration (oral, tablet, capsules, liquids etc).
US7714006	KING PHARMS	Methods of modifying the bioavailability of metaxalone	Dec, 2021 (2 years ago)
US7122566	KING PHARMS	Metaxalone products, method of manufacture, and method of use	Feb, 2026 (1 year, 6 months from now)

Market Authorisation Date: 01 January, 1982

Treatment: Use of metaxalone for treatment of musculoskeletal conditions; Treatment of musculoskeletal conditions

Dosage: TABLET

Strength	Submission Date	ANDA(s) Filed	First applicant approval	Last patent expiry	180 day status
400 mg
800 mg	04 Nov, 2004	1	31 Mar, 2010	03 Dec, 2021	Non-Forfeiture