AMENDMENT TO LEASE

Exhibit 10.16

AMENDMENT TO LEASE

This Amendment (“Amendment”) is made as of the 6^th day of November, 1998, by and between NORWALK IMPROVEMENTS, LLC. a New York limited liability company having an address at 580 White Plains Road, Tarrytown, New York 10591 (“Landlord”) and TN TECHNOLOGIES, INC., a Delaware corporation having an address at 400 Nyala Farms, Nyala Farm Road, Westport, Connecticut 06880 (“Tenant”).

WHEREAS, Landlord and Tenant entered into a lease, dated as of April 21, 1998, for the entire second, third and fourth floors in the building known as 230 East Avenue, Norwalk, Connecticut (the “Lease”);

WHEREAS, Tenant’s performance of its obligations under said lease was guaranteed by True North Communications Inc. (“Guarantor”) pursuant to a Guaranty of Lease, dated April 21,1998, made by Guarantor for the benefit of Landlord (the “Guaranty”);

WHEREAS, Landlord, as landlord, and Tenant, as tenant, entered into a letter agreement, dated July 8, 1998, relating to among other things, the performance of Landlord’s Work and the Initial Improvements (the “July 8 Agreement”);

WHEREAS, Landlord and Tenant wish (i) to amend the Lease in certain other respects in accordance with the terms set forth herein and (ii) to supersede the terms of the July 8 Agreement; and

WHEREAS, by affixing its joinder hereto, Guarantor desires to reaffirm its guaranty of all of Tenant’s obligations under the Lease, as amended by this Amendment; and

NOW THEREFORE, in consideration of Ten Dollars ($10.00) and the mutual covenants contained herein, the receipt and sufficiency of which are hereby acknowledged, the parties agree as follows:

“(a) The term “Term Commencement Date” shall mean the earlier of (i) the date upon which Tenant commences operation of its business in any portion of the Premises and (ii) the later of (A) February 1, 1999, and (B) Landlord’s Work Substantial Completion Date (as hereinafter defined). The term “Landlord’s Work Substantial Completion Date” shall mean the date upon which there remains no incomplete item of Landlord’s Work that

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would prevent Tenant from obtaining a temporary or permanent certificate of occupancy for the Premises upon Tenant’s completion of the Initial Improvements in accordance with the plans and specifications that have been approved in writing by Landlord. The following shall be deemed conclusive and binding evidence upon the parties that the Landlord’s Work Substantial Completion Date has occurred: (1) a temporary or permanent certificate of occupancy, a letter of compliance or other comparable evidence from the City of Norwalk Department of Code Enforcement or the Chief Zoning Enforcement Officer of the City of Norwalk (the “City”) that the Landlord’s Work Substantial Completion Date has occurred or (2) a letter from EMG, which is the firm that certifies the completion of Landlord’s Work for the Superior Mortgagee (as hereinafter defined) in connection with construction loan advances, that the Landlord’s Work Substantial Completion Date has occurred. Landlord shall notify Tenant of the date upon which Landlord determines the Landlord’s Work Substantial Completion Date has occurred (the “Rent Commencement Notice”), and Tenant shall pay Rent payable hereunder from and after the date set forth in the Rent Commencement Notice. If there shall be a dispute between the parties as to the date set forth in the Rent Commencement Notice, then Tenant shall continue to pay Landlord the full Rent payable hereunder until such dispute is finally resolved. Landlord shall use all commercially reasonable efforts to first obtain the evidence described in clause (1) above from the City; however, if the City is unwilling or unable to provide such evidence to Landlord within ten (10) business days after Tenant receives the Rent Commencement Notice for a reason other than its determination that Landlord has failed to complete the requisite items of Landlord’s Work, then Landlord shall have an additional ten (10) business days thereafter to attempt to obtain the evidence described in clause (2) above from EMG.”

“Landlord shall use all commercially reasonable efforts to complete the items of work set forth on Exhibit C annexed hereto (all of such items shall be referred to herein as “Landlord’s Work”, items 3, 4, 6(a), 7,10, and 11(a) of Landlord’s Work shall be referred to herein as “Landlord’s Initial Work,” and item 3(b) of Landlord’s Work shall be referred to as the “Initial AC Work”) on or before January 15,1999. If Landlord is delayed in completing any item of Landlord’s Initial Work due to a Tenant’s Delay, then

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the completion date for such item shall be deemed to be the date it would have occurred but for such Tenant’s Delay, as determined by Landlord in its reasonable judgment.”

“(d) Upon the written request of either Landlord or Tenant made at any time after the Term Commencement Date, both parties shall enter into a written agreement, in recordable form, confirming the date upon which the Term Commencement Date occurred.”

“If Landlord fails to deliver the Compliance Evidence to Tenant on or before February 1,1999, then the validity of this Lease shall not be impaired under such circumstances; however, if a Tenant’s Delay is not the cause, directly or indirectly, of such failure, then the Rent payable under Article 2 hereof shall be fully abated until such time as Landlord delivers the Compliance Evidence to Tenant.”

“(a) Tenant shall pay base rent (the “Base Rent”) to Landlord (i) at the rate of $1,086,000.00 per year for the period from the Term Commencement Date to and including the day immediately preceding the fifth (5^th) anniversary of the Term Commencement Date in equal monthly installments of $90,500.00 and (ii) at the rate of $1,248,900.00 per year for the period from the fifth (5^th) anniversary of the Term Commencement Date to and including the Term Expiration Date in equal monthly installments of $104,075.00.”

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IN WITNESS WHEREOF, the parties hereto have duly executed this Amendment as of the day and year first above written.

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