King Pharms Drug Patent Portfolio

King Pharms owns 3 orange book drugs protected by 6 US patents Given below is the list of King Pharms's drug patents along with their expiration dates.

Drug Patent Number Drug Patent Title Drug Patent Expiry Status
US7122566 Metaxalone products, method of manufacture, and method of use 06 Feb, 2026
Active
US7101569 Methods of administering levothyroxine pharmaceutical compositions 02 Oct, 2023 Expired
US6555581 Levothyroxine compositions and methods 15 Feb, 2022 Expired
US7067148 Stabilized pharmaceutical and thyroid hormone compositions and method of preparation 15 Feb, 2022 Expired
US7714006 Methods of modifying the bioavailability of metaxalone 03 Dec, 2021 Expired
US5656296 Dual control sustained release drug delivery systems and methods for preparing same 12 Aug, 2014 Expired


Given below is the list of recent legal activities going on the following drug patents of King Pharms.

Activity Date Patent Number
Patent litigations
Payment of Maintenance Fee, 12th Year, Large Entity 14 Oct, 2021 US7714006
11.5 yr surcharge- late pmt w/in 6 mo, Large Entity 03 May, 2018 US7122566
Payment of Maintenance Fee, 12th Year, Large Entity 03 May, 2018 US7122566
Payment of Maintenance Fee, 12th Year, Large Entity 14 Feb, 2018 US7101569
Payment of Maintenance Fee, 12th Year, Large Entity 20 Nov, 2017 US7067148
Payment of Maintenance Fee, 8th Year, Large Entity 16 Oct, 2017 US7714006
File Marked Found 21 Sep, 2017 US6555581
Change in Power of Attorney (May Include Associate POA) 16 Aug, 2016 US6555581
Email Notification 16 Aug, 2016 US6555581
Correspondence Address Change 15 Aug, 2016 US6555581
File Marked Found 05 Feb, 2016 US6555581
File Marked Found 28 Jan, 2016 US6555581
Change in Power of Attorney (May Include Associate POA) 17 Dec, 2015 US7122566
Email Notification 17 Dec, 2015 US7122566
Correspondence Address Change 16 Dec, 2015 US7122566


King Pharms's Family Patents

King Pharms drugs have patent protection in a total of 9 countries. It has a significant patent presence in the US with 76.2% of its patents being US patents. 7 countries have all of their patents expired or invalidated which has opened up potential generic launch opportunities in these countries. Click below to unlock the full patent family tree.

Family Patents



King Pharms Drug List

Given below is the complete list of King Pharms's drugs and the patents protecting them.


1. Levoxyl

Levoxyl is protected by 3 patents, out of which all have expired. Check out its patent list below.

Drug Patent Number Drug Patent Title Drug Patent Expiry Status
US7101569 Methods of administering levothyroxine pharmaceutical compositions 02 Oct, 2023
(1 year, 8 days ago)
Expired
US6555581 Levothyroxine compositions and methods 15 Feb, 2022
(2 years ago)
Expired
US7067148 Stabilized pharmaceutical and thyroid hormone compositions and method of preparation 15 Feb, 2022
(2 years ago)
Expired

Discover which of these patents contain the active ingredient(API) of the drug, their family patents, along with litigation and legal activity details of these patents on Levoxyl's drug page


2. Procanbid

Procanbid is protected by 1 patent, which has expired already. Check out its patent list below.

Drug Patent Number Drug Patent Title Drug Patent Expiry Status
US5656296 Dual control sustained release drug delivery systems and methods for preparing same 12 Aug, 2014
(10 years ago)
Expired

Discover which of these patents contain the active ingredient(API) of the drug, their family patents, along with litigation and legal activity details of these patents on Procanbid's drug page


3. Skelaxin

Skelaxin is protected by 2 patents, out of which 1 has expired. Check out its patent list below.

Drug Patent Number Drug Patent Title Drug Patent Expiry Status
US7122566 Metaxalone products, method of manufacture, and method of use 06 Feb, 2026
(1 year, 3 months from now)
Active
US7714006 Methods of modifying the bioavailability of metaxalone 03 Dec, 2021
(2 years ago)
Expired

Discover which of these patents contain the active ingredient(API) of the drug, their family patents, along with litigation and legal activity details of these patents on Skelaxin's drug page


Explore Our Curated Drug Screens

Drugs Generating Over $1 Billion in Annual Revenue
Explore the top-performing drugs that dominate the pharmaceutical industry
View List
NCE-1 Patent Expiry in the Next 1 Year
Identify opportunities as new chemical entity (NCE-1) patents approach expiry
View List
Recently Granted Patents in EP
Find the opportunity to file Oppositions
View List