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| (Source: SK Hynix) |
SK Hynix Inc. has doubled down in its fight with Advanced Memory Technologies LLC, filing four additional inter partes review petitions that collectively target every patent the Texas company asserted in an ongoing infringement suit.
The Korean chipmaker first petitioned the Patent Trial and Appeal Board on Aug. 22, challenging U.S. Patent No. 8,593,888 covering a semiconductor memory device. By Aug. 29, it had added reviews against U.S. Patent Nos. 8,400,835, 7,969,231, 7,777,557, and 7,920,018. The patents, issued between 2010 and 2013, cover booster circuits, voltage generation, and non-volatile memory design.
These filings respond to litigation AMT launched in December 2024 in the Eastern District of Texas, where the company accuses SK Hynix of infringing five memory patents. In an amended complaint this April, AMT pointed to SK Hynix's NAND flash and DRAM products — including Gold P31 and Platinum P41 SSDs and LPDDR5x and DDR5 chips — and alleged sales to major U.S. tech buyers such as Dell, NVIDIA, Microsoft, and AMD. The complaint seeks damages, enhanced damages, attorneys' fees, and an injunction.
The case is Advanced Memory Technologies LLC v. SK Hynix Inc., case number 2:24-cv-01078, in the U.S. District Court for the Eastern District of Texas.
AMT has also opened a second front against Micron Technology Inc. in the Western District of Texas, case number 1:25-cv-01036, asserting four patents, three of which — the '018, '231, and '888 — overlap with its suit against SK Hynix.
By PatenTrip
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