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

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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