Intangible assets (Tables)

9 Months Ended

Sep. 30, 2025

Intangible assets other than goodwill [abstract]

Disclosure of reconciliation of intangible assets


(amounts in thousands of euros)	LICENSES		SOFTWARE		PATENTS		TOTAL
GROSS VALUES
AS OF DECEMBER 31, 2023	120		24		6,529		6,673
Acquisition	—		3		—		3
Disposal	—		—		—		—
AS OF SEPTEMBER 30, 2024	120		27		6,529		6,677

GROSS VALUES
AS OF DECEMBER 31, 2024	120		27		6,529		6,677
Acquisition	—		—		—		—
Disposal	—		—		—		—
AS OF SEPTEMBER 30, 2025	120		27		6,529		6,677


(amounts in thousands of euros)	LICENSES		SOFTWARE		PATENTS		TOTAL
AMORTIZATION
AS OF DECEMBER 31, 2023	(45)		(24)		—		(70)
Increase	—		—		—		—
Disposal	—		—		—		—
AS OF SEPTEMBER 30, 2024	(45)		(25)		—		(70)

AS OF DECEMBER 31, 2024	(45)		(25)		—		(70)
Increase	—		(1)		—		(1)
Disposal	—		—		—		—
AS OF SEPTEMBER 30, 2025	(45)		(26)		—		(71)


(amounts in thousands of euros)	LICENSES		SOFTWARE		PATENTS		TOTAL
NET BOOK VALUES
AS OF SEPTEMBER 30, 2024	$75		3		6,529		6,607
AS OF DECEMBER 31, 2024	$75		3		6,529		6,606
AS OF SEPTEMBER 30, 2025	$75		2		6,529		6,606