Accounts Payable and Accrued Expenses (Tables)

3 Months Ended

Apr. 30, 2014

Payables and Accruals [Abstract]

Accounts payable and accrued expenses

	April 30, 2014		July 31, 2013
Accounts Payable and Accruals – General and Administrative	$	3,200,070	$	3,447,618
Accounts Payable and Accruals – Research and Development		3,890,361		3,557,184
Accounts Payable and Accruals – Selling and Marketing		327,012		328,629
Accrued Make-whole Payments on Convertible Preferred Stock (see Note 9)		504,900		251,100
Executive Compensation and Directors’ Fees Payable		183,013		76,703
Total	$	8,105,356	$	7,661,234