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Last Updated: December 17, 2025

United Kingdom: These 3 Drugs Face Patent Expirations and Generic Entry in 2025 - 2026

DrugPatentWatch® Estimated Loss of Exclusivity Dates in United Kingdom

Generic Entry Dates in Other Countries

These estimated drug patent expiration dates and generic entry opportunity dates are calculated from analysis of known patents covering drugs. Many factors can influence early or late generic entry. This information is provided as a rough estimate of generic entry potential and should not be used as an independent source. The methodology is described in this blog post.

Summary: United Kingdom: These 3 Drugs Face Patent Expirations and Generic Entry in 2025 - 2026

Tradename Ingredient Estimated Entry Opportunity Date
TEKTURNA HCT aliskiren hemifumarate; hydrochlorothiazide 2026-06-23
BYFAVO remimazolam besylate 2026-07-10
MACRILEN macimorelin acetate 2026-02-18
>Tradename >Ingredient >Estimated Entry Opportunity Date

Details: United Kingdom: These 3 Drugs Face Patent Expirations and Generic Entry in 2025 - 2026

When can TEKTURNA HCT (aliskiren hemifumarate; hydrochlorothiazide) generic drug versions launch?

Generic name: aliskiren hemifumarate; hydrochlorothiazide
DrugPatentWatch® Estimated Patent Expiration / Generic Entry Opportunity Date: June 23, 2026
Generic Entry Controlled by: United Kingdom Patent 612,540

Drug Price Trends for TEKTURNA HCT
TEKTURNA HCT is a drug marketed by Noden Pharma. There is one patent protecting this drug and one Paragraph IV challenge.

This drug has thirty-two patent family members in twenty-five countries. There has been litigation on patents covering TEKTURNA HCT

See drug price trends for TEKTURNA HCT.

The generic ingredient in TEKTURNA HCT is aliskiren hemifumarate; hydrochlorothiazide. There are four drug master file entries for this API. Additional details are available on the aliskiren hemifumarate; hydrochlorothiazide profile page.

When can BYFAVO (remimazolam besylate) generic drug versions launch?

Generic name: remimazolam besylate
DrugPatentWatch® Estimated Patent Expiration / Generic Entry Opportunity Date: July 10, 2026
Generic Entry Controlled by: United Kingdom Patent 613,692

BYFAVO is a drug marketed by Acacia. There are eleven patents protecting this drug.

This drug has fifty-three patent family members in twenty-four countries. There has been litigation on patents covering BYFAVO

See drug price trends for BYFAVO.

The generic ingredient in BYFAVO is remimazolam besylate. One supplier is listed for this generic product. Additional details are available on the remimazolam besylate profile page.

When can BYFAVO (remimazolam besylate) generic drug versions launch?

Generic name: remimazolam besylate
DrugPatentWatch® Estimated Patent Expiration / Generic Entry Opportunity Date: July 10, 2026
Generic Entry Controlled by: United Kingdom Patent 613,694

BYFAVO is a drug marketed by Acacia. There are eleven patents protecting this drug.

This drug has fifty-three patent family members in twenty-four countries. There has been litigation on patents covering BYFAVO

See drug price trends for BYFAVO.

The generic ingredient in BYFAVO is remimazolam besylate. One supplier is listed for this generic product. Additional details are available on the remimazolam besylate profile page.

When can MACRILEN (macimorelin acetate) generic drug versions launch?

Generic name: macimorelin acetate
DrugPatentWatch® Estimated Patent Expiration / Generic Entry Opportunity Date: February 18, 2026
Generic Entry Controlled by: United Kingdom Patent 603,295

MACRILEN is a drug marketed by Novo. There is one patent protecting this drug.

This drug has eleven patent family members in ten countries.

See drug price trends for MACRILEN.

The generic ingredient in MACRILEN is macimorelin acetate. One supplier is listed for this generic product. Additional details are available on the macimorelin acetate profile page.

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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.