U.S. International Trade Commission (ITC) has lately announced that NVIDIA violated Rambus’ patent rights, over imports of computer-graphics chips.

In January NVIDIA was charged of infringing three Rambus patents, which relate to controllers that connect the memory and graphics chips. The complaint targets NVIDIA’s GeForce, Quadro, nForce, Tesla and Tegra lines.

The ITC said an order should be issued to ban imports of some products containing Nvidia chips, a move that would be subject to review by U.S. President Barack Obama.

Rambus has spent years suing computer memory chipmakers who refused licensing deals, including Samsung Electronic Co. Samsung agreed to pay $900 million to end the legal dispute and sign a new licensing deal in January.