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Amortizable Intangible Assets | 12 Months Ended
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Jan. 31, 2021
Goodwill and Intangible Assets Disclosure [Abstract] |
Amortizable Intangible Assets | Amortizable Intangible Assets The components of our amortizable intangible assets are as follows:
| January 31, 2021 |  | January 26, 2020
| Gross Carrying Amount |  | Accumulated Amortization |  | Net Carrying Amount |  | Gross Carrying Amount |  | Accumulated Amortization |  | Net Carrying Amount
| (In millions) |  | (In millions)
Acquisition-related intangible assets (1) | $ | 3,280 |  |  | $ | (774) |  |  | $ | 2,506 |  |  | $ | 195 |  |  | $ | (192) |  |  | $ | 3 |
Patents and licensed technology | 706 |  |  | (475) |  |  | 231 |  |  | 520 |  |  | (474) |  |  | 46 |
Total intangible assets | $ | 3,986 |  |  | $ | (1,249) |  |  | $ | 2,737 |  |  | $ | 715 |  |  | $ | (666) |  |  | $ | 49 |
(1) As of January 31, 2021, acquisition-related intangible assets include the fair value of a Mellanox IPR&D project of $630 million, which has not been amortized. Once the project reaches technological feasibility, we will begin to amortize the intangible asset over its estimated useful life. Refer to Note 2 of these Notes to the Consolidated Financial Statements for further details. Amortization expense associated with intangible assets for fiscal years 2021, 2020, and 2019 was $612 million, $25 million, and $29 million, respectively. Future amortization expense related to the net carrying amount of intangible assets as of January 31, 2021 is estimated to be $548 million in fiscal year 2022, $545 million in fiscal year 2023, $423 million in fiscal year 2024, $367 million in fiscal year 2025, $97 million in fiscal year 2026, and $757 million in fiscal year 2027 and thereafter.

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- Definition The entire disclosure for all or part of the information related to intangible assets. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -URI http://asc.fasb.org/topic&trid=2144416 + Details
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