Accrued Expenses

12 Months Ended

Dec. 31, 2011

Accrued Expenses

7. Accrued Expenses

Accrued expenses consist of the following for the years ended December 31, 2011 and 2010:

	December 31,
	2011		2010
Patent fees	$	450,416	$	250,000
Professional services		298,283		284,290
Supplier obligations		236,592		195,000
Customer overpayments		48,623		212,302
Sales taxes		65,217		76,805
Other		123,024		209,393
	$	1,222,155	$	1,227,790