Löschungsantrag nicht unterstützt; es gibt genügend seriöse Quellen für die Verwendung des Wortes in der im OP angegebenen Bedeutung (mir ist der Ausdruck aus englischen juristischen Texten bekannt):
...40. However, I do not think it either sensible or possible to focus solely on what might be a possible solution in relation to the position during the currency of a bankruptcy or a DRO...
....the tenant has a right, as between him and his landlord, to remove, either during the currency of the lease or after the termination thereof, any building or fixtures annexed to the land...
During the currency of the contract
wird (jedenfalls im BE) gelegentlich in Verträgen verwendet; z.B. in den
ICE Design and Construct Conditions of Contract: Conditions of Contract...
Further in the event that the Contractor wishes to introduce such materials during the currency of the Contract then it shall first obtain the consent of the Client
...These thresholds may be altered at the sole discretion of the Scottish Ministers during the currency of the Contract.
Ebenso für Australien:
If, during the currency of the Contract, a conflict or risk of Conflict of Interest arises (without limitation, because of work undertaken for any person other than the Principal) the Contractor undertakes to notify the Principal immediately in writing of that conflict or risk of Conflict of Interest.