Last Updated: September 24, 2026

MICRO-K LS Drug Patent Profile


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When do Micro-k Ls patents expire, and what generic alternatives are available?

Micro-k Ls is a drug marketed by Kv Pharm and is included in one NDA.

The generic ingredient in MICRO-K LS is potassium chloride. There is one drug master file entry for this compound. Seventy-six suppliers are listed for this compound. Additional details are available on the potassium chloride profile page.

DrugPatentWatch® Litigation and Generic Entry Outlook for Micro-k Ls

A generic version of MICRO-K LS was approved as potassium chloride by ACTAVIS LABS FL INC on April 10th, 2002.

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Summary for MICRO-K LS
US Patents:0
Applicants:1
NDAs:1
Raw Ingredient (Bulk) Api Vendors: 314
DailyMed Link:MICRO-K LS at DailyMed

US Patents and Regulatory Information for MICRO-K LS

Applicant Tradename Generic Name Dosage NDA Approval Date TE Type RLD RS Patent No. Patent Expiration Product Substance Delist Req. Exclusivity Expiration
Kv Pharm MICRO-K LS potassium chloride FOR SUSPENSION, EXTENDED RELEASE;ORAL 019561-003 Aug 26, 1988 DISCN Yes No ⤷  Start Trial ⤷  Start Trial ⤷  Start Trial
>Applicant >Tradename >Generic Name >Dosage >NDA >Approval Date >TE >Type >RLD >RS >Patent No. >Patent Expiration >Product >Substance >Delist Req. >Exclusivity Expiration

International Patents for MICRO-K LS

See the table below for patents covering MICRO-K LS around the world.

Country Patent Number Title Estimated Expiration
Australia 544965 ⤷  Start Trial
Australia 6589880 ⤷  Start Trial
Belgium 886973 ⤷  Start Trial
Canada 1135624 FORME POSOLOGIQUE DE POTASSIUM A LIBERATION PROGRESSIVE (CONTROLLED RELEASE POTASSIUM DOSAGE FORM) ⤷  Start Trial
Switzerland 648206 COMPOSITIONS PHARMACEUTIQUES A LIBERATION CONTROLEE DE POTASSIUM. ⤷  Start Trial
>Country >Patent Number >Title >Estimated Expiration

Supplementary Protection Certificates for MICRO-K LS

Patent Number Supplementary Protection Certificate SPC Country SPC Expiration SPC Description
0253310 SPC/GB95/010 United Kingdom ⤷  Start Trial PRODUCT NAME: 2-N-BUTYL-4-CHLORO-1-((2'-(1H-TETRAZOL-5-YL)BIPHENYL-4-YL) METHYL) -5-(HYDROXYMETHYL) IMIDAZOLE, OPTIONALLY IN THE FORM OF A PHARMACEUTICALLY ACCEPTABLE SALT, IN PARTICULAR A POTASSIUM SALT; REGISTERED: SE 12209 19940902; UK 0025/0324 19941215; UK 0025/0336 19941215
0733366 SPC/GB98/031 United Kingdom ⤷  Start Trial PRODUCT NAME: 2-BUTYL-4-CHLORO-1-((2'-(1H-TETRAZOL-5-YL) BIPHENYL-4-YL)-METHYL)-5-(HYDROXYMETHYL)IMIDAZOLE (LOSARTAN),OPTIONALLY IN THE FORM OF A PHARMACEUTICALLY ACCEPTABLE SALT, IN PARTICULAR A POTASSIUM SALT( LOSARTAN POTASSIUM) AND HYDROCHLOROTHIAZIDE,; REGISTERED: FR 338520.7 19950215; FR 558453.7 19950215; UK 00025/0338 19960412
1441735 08C0026 France ⤷  Start Trial PRODUCT NAME: RALTEGRAVIR POTASSIUM; REGISTRATION NO/DATE: EU/1/07/436/001 20080102
1441735 SPC/GB08/020 United Kingdom ⤷  Start Trial PRODUCT NAME: RALTEGRAVIR OR A PHARMACEUTICALLY ACCEPTABLE SALT THEREOF, ESPECIALLY THE POTASSIUM SALT; REGISTERED: UK EU/1/07/436/001 20080102
1499331 13C0055 France ⤷  Start Trial PRODUCT NAME: SULFATE DE SODIUM ANHYDRE, SULFATE DE MAGNESIUM HEPTAHYDRATE, SULFATE DE POTASSIUM; NAT. REGISTRATION NO/DATE: NL41696 20130426; FIRST REGISTRATION: BE - 434323 20130220
>Patent Number >Supplementary Protection Certificate >SPC Country >SPC Expiration >SPC Description

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Drugs may be covered by multiple patents or regulatory protections. All trademarks and applicant names are the property of their respective owners or licensors. Although great care is taken in the proper and correct provision of this service, thinkBiotech LLC does not accept any responsibility for possible consequences of errors or omissions in the provided data. The data presented herein is for information purposes only. There is no warranty that the data contained herein is error free. We do not provide individual investment advice. This service is not registered with any financial regulatory agency. The information we publish is educational only and based on our opinions plus our models. By using DrugPatentWatch you acknowledge that we do not provide personalized recommendations or advice. thinkBiotech performs no independent verification of facts as provided by public sources nor are attempts made to provide legal or investing advice. Any reliance on data provided herein is done solely at the discretion of the user. Users of this service are advised to seek professional advice and independent confirmation before considering acting on any of the provided information. thinkBiotech LLC reserves the right to amend, extend or withdraw any part or all of the offered service without notice.