THIS AGREEMENT made the 28th day of October, 2003

Exhibit 10.13

THIS AGREEMENT made the 28^th day of October, 2003

BETWEEN:

KANATA RESEARCH PARK CORPORATION

(Hereinafter called the “Landlord”)

OF THE FIRST PART

AND

INSTANTEL INC.

(Hereinafter called the “Tenant”)

OF THE SECOND PART

AMENDMENT TO LEASE

WHEREAS pursuant to a written lease dated the 6^th day of July, 1998 (the “Lease”), the Landlord leased to the Tenant all those premises consisting of Fifteen Thousand (15,000) useable square feet, subsequently certified as Fourteen Thousand Eight Hundred and Ten point Seven (14,810.7) certified useable square feet [Sixteen Thousand, Four Hundred and Sixty-Nine point Five (16,469.5) certified rentable square feet] of space on the first (1^st) floor (the “Leased Premises”) of the building known _______ as 309 Legget Drive (the “Building”) in the City of Ottawa;

AND WHEREAS the parties have agreed to reduce the Annual Rent for the fifth year of the Term and the Tenant wishes to renew the Term of the Lease, and the Landlord is in agreement therewith;

THEREFORE in consideration of the rents, covenants, conditions and agreements herein contained, the Landlord and Tenant covenant and agree as follows:

“The Landlord hereby leases to the Tenant all those premises consisting of Fourteen Thousand Eight Hundred and Ten point Seven (14,810.7) certified useable square feet [Sixteen Thousand, Four Hundred and Sixty-Nine point Five (16,469.5) certified rentable square feet] of space on the first (1^st) floor (herein called the “Leased Premises”) of the building known municipally as 309 Legget Drive (herein called the “Building”) in the City of Ottawa which said building is erected on the lands (herein called the “Lands”) described in Schedule “A” annexed hereto. The Leased Premises are more particularly outlined on the floor plan annexed hereto and marked Schedule “B”.”

““Tenant’s Proportionate Share” means Twenty-Six point Two percent (26.2%).”

“3.01 MONTHLY RENTAL

The Annual Rent shall be payable in equal monthly installments (hereinafter called the “Monthly Rent”) in advance on the first day of each calendar month during the Term. If the Term commences on any day other than the first (1st) or ends on any day other than the last of a calendar month, rent for the fraction of a month at the commencement and at the end of the Term shall be prorated at a rate per day equal to 1/365th of the Annual Rent payable. The Annual Rent and the Monthly Rent may be varied based on the actual area of the Leased Premises and Building as certified by the Landlord.”

“All major repairs and/or replacements shall be amortized over the expected life of the repair and/or replacement, or as per Generally

2

Accepted Accounting Principals, whichever amortization period is longer. The Tenant shall not be responsible for repairs and/or replacements due to structural defects, or, from improvements which are capital in nature.”

“SIGNAGE

3

RIGHT TO EXPAND

The Landlord hereby grants to the Tenant the right to expand into vacant premises located within the Building subject to availability (the “Additional Premises”) on an “as is” basis. The term of the Additional Premises shall be coterminous with the Renewal Term, and all terms and conditions shall be the same as in this Amendment to Lease. The parties shall execute an amendment to lease document reflecting the terms relating to the Additional Premises. The Landlord is prepared to advise the Tenant when space is or will be available to lease within the Building.

SAVE AND EXCEPT as set out herein all other terms and conditions of the Lease shall remain unchanged and shall apply during the Renewal Term.

ALL CAPITALIZED terms used herein shall have the same meaning as in the Lease.

IN WITNESS WHEREOF the parties hereto have affixed their corporate seals duly attested to by the hands of their authorized signing officers.

4