definiens: means anyone of the Review Dates means the Hili ] anniversary of the commencement of the Term and fili1illil@lf ~ ll ] anniversary of that date 2 . Procedure 2.1 As from the Relevant Review Date the Rent shall be the [ I~ ] Rent or the Rent then payable whichever is [ _ 2.2 In relation to each review the Landlord may serve on the Tenant _ IIJ a notice in writing [ iII"1I ] the Rent to be reviewed as from the Relevant Review Date 2.3 If the Landlord and the Tenant fail to agree the amount of the ~ltl1r ~ J1 Rent within [ tIl1ir1l1a~ ] after the service of the Rent Review Notice ~''Ii . '1;l!l, i~ ' ( l;;i_);$%%,,~~~ * 1It~~~~$!~ffit.~ifu>:;-~ ~ •• _ 1I'dI ] may apply for d ~ termination of the amount of the riY"~lVf, MJm~ ] ~~~~#;,f.:l ~1~.~t,,6t~ 2.4 and at the end of such period there shall be due to the Landlord [ rt!:glli[~,[ilIi CONFIDENTIAL TREATMENT REQUESTED BY AVIRON [ J -CERTAIN CONFIDENTIAL INFORMATION CONTAINED IN THIS DOCUMENT, MARKED BY BRACKETS, IS FILED WITH THE SECURITIES AND EXCHANGE COMMISSION PURSUANT TO RULE 24B-2 OF THE SECURITIES ACT OF 1934, AS AMENDED