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Note 11 - Intangible Assets

6 Months Ended

May 31, 2023

Intangible Assets Disclosure [Text Block]

11.

INTANGIBLE ASSETS

The components of intangible assets were as follows:

		*Balance at May 31, 2023*							*Balance at November 30, 2022*
	*Estimated Useful Lives in Years*	*Gross Carrying Amount*		*Accumulated Amortization*			*Net Carrying Amount*		*Gross Carrying Amount*		*Accumulated Amortization*			*Net Carrying Amount*
Patents	10-17	$	3,931	$	(596	)	$	3,335	$	3,931	$	(468	)	$	3,463
Trademarks	Indefinite		360		—			360		360		—			360
Customer List	2		70		(38	)		32		70		(21	)		49
Total		$	4,361	$	(634	)	$	3,727	$	4,361	$	(489	)	$	3,872

The trademarks have an indefinite life and will be assessed annually for impairment. All other intangible assets are finite-lived.

Intangible assets amortization expenses are recorded within operating expenses in the accompanying Condensed Consolidated Statements of Operations and Comprehensive Loss. Total intangible assets amortization expense for the six months ended May 31, 2023 and 2022 were $0.1 million and $0.1 million, respectively. Total intangible assets amortization expense for the three months ended May 31, 2023 and 2022 were $0.1 million and $0.1 million, respectively.

Estimated future amortization expense related to intangible assets as of May 31, 2023 are as follows (in thousands):

Fiscal Year Ending November 30,
2023 (six months)	$	145
2024		272
2025		254
2026		254
2027		254
Thereafter		2,188
Total	$	3,367