Quarterly report pursuant to Section 13 or 15(d)

Commitments and Contingencies

Commitments and Contingencies
3 Months Ended
Mar. 31, 2015
Commitments and Contingencies [Abstract]  
Commitments and Contingencies
7. Commitments and Contingencies

Collaborative Agreements, Royalties and Milestone Payments

The Company is obligated to pay royalties, ranging from 0.5% to 5% of the selling price of certain licensed components and up to 40% of any sublicense fees to various universities and other research institutions based on future sales or licensing of products that incorporate certain products and technologies developed by those institutions.
In addition, the Company has committed to make potential future “milestone” payments to third parties as part of licensing and development programs. Payments under these agreements become due and payable only upon the achievement of certain developmental, regulatory and/or commercial milestones. Because it is uncertain if and when these milestones will be achieved, such contingencies, aggregating up to $77.3 million (assuming one product per contract meets all milestones events) have not been recorded on the accompanying condensed consolidated balance sheets. The Company is unable to determine precisely when and if payment obligations under the agreements will become due as these obligations are based on milestone events, the achievement of which is subject to a significant number of risks and uncertainties.
As of March 31, 2015, the Company leased administrative and research facilities, and office equipment under operating leases expiring on various dates through April 2023. These leases require the Company to pay taxes, insurance, maintenance and minimum lease payments. Total rental expense, including other costs required under the Company’s leases, was approximately $0.9 million for the three months ended March 31, 2015 and 2014. Rental expense based on leases allowing for escalated rent payments are recognized on a straight-line basis. At the expiration of the lease, the Company is required to restore certain of its leased property to certain conditions in place at the time of lease inception. The Company believes these costs will not be material to its operations.