CONDENSED CONSOLIDATED BALANCE SHEETS - USD ($)	Jan. 31, 2016	Oct. 31, 2015
Current assets:
Cash and cash equivalents	$ 3,980,826	$ 4,369,219
Short-term investments in certificates of deposit	2,150,000	2,400,000
Prepaid expenses and other current assets	55,774	126,528
Total current assets	6,186,600	6,895,747
Patents, net of accumulated amortization of $721,069 and $639,744, respectively	2,315,042	2,396,367
Property and equipment, net of accumulated depreciation of $17,465 and $13,617, respectively	145,620	43,456
Total assets	8,647,262	9,335,570
Current liabilities:
Accounts payable and accrued expenses	1,036,218.00	380,765
Royalties and contingent legal fees payable	207,789	213,017
Total current liabilities	1,244,007	593,782
Patent acquisition obligation (Note 9)	3,812,088	3,688,187
Total liabilities	$ 5,056,095	$ 4,281,969
Commitments and contingencies (Note 9)
Shareholders’ equity:
Preferred stock, par value $100 per share; 19,860 shares authorized; no shares issued or outstanding, Series A convertible preferred stock, par value $100 per share; 140 shares issued and outstanding	$ 14,000	$ 14,000
Common stock, par value $.01 per share; 24,000,000 shares authorized; 8,730,878 and 8,724,878 shares issued and outstanding, respectively	87,309	87,249
Additional paid-in capital	151,231,712	151,101,117
Accumulated deficit	(147,741,854)	(146,148,765)
Total shareholders’ equity	3,591,167	5,053,601
Total liabilities and shareholders’ equity	$ 8,647,262	$ 9,335,570
Preferred Stock [Member]
Shareholders’ equity:
Preferred stock, par value $100 per share; 19,860 shares authorized; no shares issued or outstanding, Series A convertible preferred stock, par value $100 per share; 140 shares issued and outstanding
Total shareholders’ equity	$ 14,000	$ 14,000
Series A Preferred Stock [Member]
Shareholders’ equity:
Preferred stock, par value $100 per share; 19,860 shares authorized; no shares issued or outstanding, Series A convertible preferred stock, par value $100 per share; 140 shares issued and outstanding	$ 14,000	$ 14,000