Invalidity dossier

US 9823272

Wafer testing probe card

Current assignee: MPI Corp

Added 4/27/2026, 7:39:02 AM

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Patent summary

Title, assignee, inventors, filing/issue dates, abstract, and a plain-language overview of the claims.

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An analysis of United States Patent 9,823,272 reveals the following details.

Title: Wafer testing probe card

Assignee: MPI Corp.

Inventors: Ming-Chi Chen, Tien-Chia LI, Dai-Jin YEH, Tsung-Yi Chen, Chien-Kuei WANG

Filing Date: January 24, 2014

Issue Date: November 21, 2017

Abstract:
A wafer testing probe card includes a printed circuit board, a flexible circuit board, an elastic piece, and a probe unit. The flexible circuit board is electrically connected to the printed circuit board. The elastic piece is disposed between the printed circuit board and the flexible circuit board. The probe unit includes a probe head and a plurality of probes. The probe head is fixed on the printed circuit board and has a plurality of through holes. The probes respectively pass through the through holes and move up and down relative to the probe head.

Overview of Independent Claims

Independent Claim 1:
This claim describes the main invention, a wafer testing probe card. The key components are a printed circuit board (PCB), a flexible circuit board connected to the PCB, an elastic piece sandwiched between them, and a probe unit. The probe unit contains a probe head with holes and multiple probes that can move up and down through these holes. When the probes touch a device being tested, they press against the flexible circuit board, which is supported by the elastic piece. This setup allows signals to travel from the device under test, through the probes and the flexible circuit board, to the main printed circuit board. A crucial feature is that the elastic piece is physically separated from the probes by the flexible circuit board, absorbing the contact force without directly touching the probes.

A search of the dockets for the U.S. Court of Appeals for the Federal Circuit (CAFC) for the year 2026 did not yield any public records specifically referencing US Patent 9,823,272. It is possible that no litigation involving this patent has reached this court in the specified timeframe, or any existing records are not publicly accessible.

Generated 5/8/2026, 5:32:51 AM