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Goodwill and Intangible Assets
 12 Months Ended
Jun. 30, 2024
Goodwill and Intangible Assets Disclosure [Abstract]  
Goodwill and Intangible Assets Goodwill and Intangible Assets
Goodwill
There were no changes to goodwill during the fiscal year ended June 30, 2024.
As of the first day of its fourth quarter of fiscal 2024, the Company performed a qualitative impairment test on the goodwill balance and concluded there was no impairment.
Intangible Assets
Intangible assets, net included the following:
June 30, 2024June 25, 2023
(in millions of U.S. Dollars)GrossAccumulated AmortizationNetGrossAccumulated AmortizationNet
Intangible assets:
Customer relationships$— $— $— $4.8 ($4.8)$— 
Developed technology24.0 (22.8)1.2 24.0 (21.7)2.3 
Acquisition related intangible assets24.0 (22.8)1.2 28.8 (26.5)2.3 
Patent and licensing rights49.8 (27.1)22.7 55.5 (33.9)21.6 
Total intangible assets$73.8 ($49.9)$23.9 $84.3 ($60.4)$23.9 
Total amortization of acquisition-related intangible assets was $1.1 million, $1.7 million and $2.2 million and total amortization of patents and licensing rights was $4.4 million, $4.2 million and $5.1 million for the years ended June 30, 2024, June 25, 2023 and June 26, 2022, respectively.
The Company invested $5.9 million, $4.9 million and $4.8 million for the years ended June 30, 2024, June 25, 2023 and June 26, 2022, respectively, for patent and licensing rights. For the fiscal years ended June 30, 2024, June 25, 2023 and June 26, 2022, the Company recognized $0.2 million, $0.1 million and $1.8 million, respectively, in impairment charges related to its patent portfolio.
Total future amortization expense of intangible assets is estimated to be as follows:
(in millions of U.S. Dollars)

Fiscal Year Ending
Acquisition Related IntangiblesPatentsTotal
June 29, 2025$1.2 $3.8 $5.0 
June 28, 2026— 2.8 2.8 
June 27, 2027— 2.1 2.1 
June 25, 2028— 1.8 1.8 
June 24, 2029— 1.6 1.6 
Thereafter— 10.6 10.6 
Total future amortization expense$1.2 $22.7 $23.9