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Note 11 - Intangible Assets

3 Months Ended

Feb. 28, 2023

Intangible Assets Disclosure [Text Block]

11.

INTANGIBLE ASSETS

The components of intangible assets were as follows:

				Balance at February 28, 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	$	(532	)	$	3,399	$	3,931	$	(468	)	$	3,463
Trademarks	Indefinite				360		—			360		360		—			360
Customer List	2				70		(29	)		41		70		(21	)		49
Total				$	4,361	$	(561	)	$	3,800	$	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 three months ended February 28, 2023 and 2022 were $0.1 million and $0.1 million, respectively.

Estimated future amortization expense related to intangible assets as of February 28, 2023 are as follows (in thousands):

Fiscal Year Ending November 30,
2023 (nine months)	$	217
2024		272
2025		254
2026		254
2027		254
Thereafter		2,189
Total	$	3,440