Carbidopa; Levodopa is Used for treating Parkinson's disease and related conditions such as post-encephalitic parkinsonism and parkinsonism from carbon monoxide or manganese intoxication. It was first introduced by Organon Llc A Sub Of Organon And Co in its drug Sinemet on Approved Prior to Jan 1, 1982. Other drugs containing Carbidopa; Levodopa are Duopa, Sinemet Cr, Dhivy, Rytary. 27 different companies have introduced drugs containing Carbidopa; Levodopa.

Carbidopa; Levodopa Patents

Given below is the list of patents protecting Carbidopa; Levodopa, along with the drug name that holds that patent and the company name owning that drug.

Drug Used in	Drug Patent Number	Drug Patent Title	Drug Patent Expiry	Drug Owner
Dhivy	US11033521	Levodopa fractionated dose composition and use	Mar 28, 2039	Avion Pharms
Dhivy	US11439613	Levodopa fractionated dose composition and use	Mar 28, 2039	Avion Pharms
Dhivy	US11819485	Levodopa fractionated dose composition and use	Mar 28, 2039	Avion Pharms
Rytary	US7094427	Combination immediate release controlled release levodopa/carbidopa dosage forms	May 29, 2022 (Expired)	Impax
Rytary	US8377474	Controlled release formulations of levodopa and uses thereof	Dec 26, 2028	Impax
Rytary	US8454998	Controlled release formulations of levodopa and uses thereof	Dec 26, 2028	Impax
Rytary	US8557283	Controlled release formulations of levodopa and uses thereof	Dec 26, 2028	Impax
Rytary	US9089607	Controlled release formulations of levodopa and uses thereof	Dec 26, 2028	Impax
Rytary	US9089608	Controlled release formulations of levodopa and uses thereof	Dec 26, 2028	Impax
Rytary	US9463246	Controlled release formulations of levodopa and uses thereof	Dec 26, 2028	Impax
Rytary	US9533046	Controlled release formulations of levodopa and uses thereof	Dec 26, 2028	Impax
Rytary	US9901640	Controlled release formulations of levodopa and uses thereof	Dec 26, 2028	Impax

Add above patents to watchlist

A patent's expiry date may change depending upon legal activities going on that patent. Critical activities like abandoning of a patent, term extension of a patent or amendment of its claims can increase or decrease the life of a patent hence affecting its expiry date and in turn affecting the generic launch date of that drug. Tracking these ongoing activities on a patent application helps to keep an eye on the latest developments in the patent process of the drug which can give an idea of how early a drug's generic could be available. The next section provides a list of recent legal activities on Carbidopa; Levodopa's patents.

Latest Legal Activities on Carbidopa; Levodopa's Patents

Given below is the list recent legal activities going on the following patents of Carbidopa; Levodopa.

Event	Date	Patent/Publication
Critical Events for all Patents
Payment of Maintenance Fee, 8th Year, Large Entity	03 Jul, 2024	US9533046
Payment of Maintenance Fee, 8th Year, Large Entity	11 Apr, 2024	US9463246(Litigated)
Email Notification	24 May, 2023	US8377474(Litigated)
Change in Power of Attorney (May Include Associate POA)	24 May, 2023	US8377474(Litigated)
Payment of Maintenance Fee, 8th Year, Large Entity	30 Jan, 2023	US9089607(Litigated)
Payment of Maintenance Fee, 8th Year, Large Entity	30 Jan, 2023	US9089608(Litigated)
Payment of Maintenance Fee, 4th Year, Large Entity	11 Aug, 2021	US9901640
Payment of Maintenance Fee, 8th Year, Large Entity	31 Mar, 2021	US8557283(Litigated)
Payment of Maintenance Fee, 8th Year, Large Entity	25 Sep, 2020	US8454998(Litigated)
Payment of Maintenance Fee, 8th Year, Large Entity	06 Aug, 2020	US8377474(Litigated)

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