Consolidated Statements of Operations - USD ($) $ in Thousands	12 Months Ended
	Oct. 31, 2023	Oct. 31, 2022
Income Statement [Abstract]
Revenue	$ 210
Operating costs and expenses:
Inventor royalties, contingent legal fees, litigation and licensing expenses	161
Research and development expenses (including non-cash share based compensation expenses of $2,037 and $3,635, respectively)	4,769	6,703
General and administrative expenses (including non-cash share based compensation expenses of $2,698 and $3,117, respectively)	6,291	7,172
Total operating costs and expenses	11,221	13,875
Loss from operations	(11,011)	(13,875)
Interest income	1,081	104
Net loss	(9,930)	(13,771)
Less: Net loss attributable to noncontrolling interest	(119)	(176)
Net loss attributable to common stockholders	$ (9,811)	$ (13,595)
Net loss per share:
Basic	$ 0.32	$ 0.45
Diluted	$ 0.32	$ 0.45
Weighted average common shares outstanding:
Basic	30,980	30,374
Diluted	30,980	30,374