ParTec (Frohwitter) asserts supercomputer patents against Lenovo in UPC Dusseldorf LD, appeals Munich LD’s rejection of one complaint against NVIDIA

Context:

• ParTec, a German supercomputer firm, is run by former patent litigator and IPCom founder Bernhard Frohwitter.
• The Unified Patent Court’s (UPC) Munich Local Division (LD) sided with NVIDIA over one of ParTec’s patents-in-suit (March 11, 2026 ip fray article). Another ParTec v. NVIDIA case will go to trial on September 16, 2026.
• Shortly before a trial in the Eastern District of Texas, Microsoft settled with ParTec (May 12, 2026 ip fray article).

What’s new:

1. On Friday (May 22, 2026), ParTec sued high-performance computing (HPC) giant Lenovo in the UPC’s Dusseldorf LD over the same two patents that are presently being asserted against NVIDIA.
2. We have also found out that ParTec has filed an appeal against the Munich LD’s decision in the first NVIDIA case.

Direct impact:

1. Lenovo is mostly known for its computers and Motorola Mobility-branded mobile devices, but it is a very large player (by some measure, arguably even the largest) in the supercomputer business. There is substantial money at stake. Lenovo has a reputation for not being a soft target, but the specter of a multi-country injunction could bring them to the negotiating table. The fact that Microsoft settled ahead of trial speaks to the strength of ParTec’s patents.
2. The appeal of the Munich LD decision could succeed. ParTec was on the winning track with respect to validity, and a single modification of the court’s claim construction could change the picture.

Wider ramifications:

• All of this shows that ParTec is serious about not leaving any major player in the supercomputer and AI infrastructure space unlicensed.
• The Dusseldorf LD receives a disproportionate number of complaints from small and medium-sized enterprises (SMEs) suing other SMEs, but it is also an increasingly popular venue for high-stakes litigation.