This Lease shall only become effective and binding upon full execution hereof by Landlord and delivery of a signed copy to Tenant.  This Lease may be executed in one or more counterparts, and each of which, so executed, shall be deemed to be an original, and all such counterparts together shall constitute one and the same instrument.  This Lease may be executed in so-called “pdf” format and each party has the right to rely upon a pdf counterpart of this Lease signed by the other party to the same extent as if such party had received an original counterpart.