Redstone Logics LLC v. Advanced Micro Devices, Inc.
Active- Docket:
- 7:2025cv00182
- Filed:
- 2025-04-18
This is an active patent infringement lawsuit filed against Advanced Micro Devices, Inc. in April 2025.
Plaintiff
5 cases as plaintiff.
Redstone Logics LLC is a Texas-based limited liability company formed in November 2022. Publicly available information does not indicate it has employees or revenue, which is consistent with its classification by industry trackers as a non-practicing entity (NPE), or patent assertion entity. Filings identify its address in McKinney, Texas. Redstone Logics is associated with other patent-holding companies, such as Cobblestone Wireless, LLC and Sandstone Innovation, LLC, through its manager.
As an NPE, Redstone Logics LLC does not manufacture products or offer any services. Its business operations are centered on monetizing a portfolio of acquired patents through litigation and licensing. The patents asserted in its litigation campaign were acquired from other entities, including Empire Technology Development LLC (a subsidiary of Allied Inventors Management, which was spun out of Intellectual Ventures) and a subsidiary of L3Harris. The patents asserted relate to semiconductor technology, specifically multi-core processors, power management, and processor operational logic.
Redstone Logics' patent-litigation posture is exclusively that of a plaintiff. As indicated by the authoritative case data, the company has filed at least five lawsuits and has not been named as a defendant. All five of its tracked cases have been filed in the U.S. District Court for the Western District of Texas, a venue known for patent litigation. This pattern of acquiring patents and filing infringement lawsuits against multiple technology companies is characteristic of an NPE with a "litigation-forward IP monetization strategy."
The company's litigation campaign has targeted major players in the technology and semiconductor industries. Notable defendants include Advanced Micro Devices, Inc., Apple, Inc., Qualcomm Incorporated, NXP Semiconductors, N.V., and MediaTek, Inc. The lawsuits accuse the defendants' products, which often incorporate ARM-based processor architectures like big.LITTLE or DynamIQ, of infringing on Redstone's acquired patents. Some of these disputes have been resolved, including a noticed resolution with MediaTek and a settlement with NXP Semiconductors.
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This is an active patent infringement lawsuit filed against Advanced Micro Devices, Inc. in April 2025.
The lawsuit alleges that MediaTek's products with DynamIQ Shared Unit architecture infringe the '339 patent. A claim construction order was issued on February 21, 2025.
The case was settled, and the plaintiff's claims were dismissed with prejudice in May 2025. The defendant's counterclaims were dismissed without prejudice.
This active complaint targets Qualcomm products implementing DynamIQ Shared Unit or big.LITTLE architectures, such as the Snapdragon 8 Gen 2 and Snapdragon 835 Mobile Platform. The parties have filed a joint claim construction statement.
In this active case, the court granted a joint motion on November 20, 2025, to adopt prior claim constructions from the Redstone Logics LLC v. Qualcomm Inc. case.