Semisilicon Technology Corp.

I'll research this company before writing the profile.

Let me look into the litigation specifics.

Semisilicon Technology Corp. (Chinese: 矽誠科技股份有限公司; brand "SEMISILICON"; semitech.com.tw) is a privately held Taiwanese IC design house at 8F-2, No. 504, Yuanshan Rd., Zhonghe District, New Taipei City. Taiwan company registries list incorporation on 14 April 1995 (company materials say May 1995), paid-in capital of NT$27 million (about US$0.8m), chairwoman Chang Mei-ling, and director Peng Wen-chi as the named inventor on most of its patents. It is not publicly listed, and its Rule 7.1 disclosure in the Delaware suit below lists no parent or affiliate. Employee count and revenue are not disclosed in any verifiable public source; I did not find reliable figures.

Products / operations. It is an operating company, not a shell licensor. It designs and sells semiconductor ICs — primarily electroluminescent (EL) panel driver ICs and LED control/driver ICs — plus LED lamp-string control systems and addressable LED packages that embed a control IC with power and data-in/data-out pins (e.g., the DJ5111 RGBW PWM driver and DJ5091 constant-current driver announced in 2008). Applications include consumer electronics, computer peripherals, decorative and display lighting. Its portfolio (about 60 U.S. patents; ~200 family-wide per Patsnap) centers on synchronized LED strings, power-line carrier control and pixel-addressable lighting, with trademarks such as SEMITECH and COLORFUL ELVES.

Litigation posture. Two-way, with an enforcement tilt. As plaintiff it sued inMusic, LLC in D. Del. (1:25-cv-01566, filed 29 Dec 2025), asserting U.S. 8,124,988 ("Light emitting diode lamp package structure") against ION Audio speakers with LED lighting. As defendant it faces the tracked PTAB matter filed by Xu Peicheng (Hong Kong) Optoelectronic Technology (IPR2024-00156/‑157 against U.S. 8,884,546 and 8,124,988); the '546 review was instituted and reached a May 2025 final written decision, while the '988 petition was denied institution. It litigates in Delaware, not the Eastern District of Texas.

Context. The asserted '988 patent also survived ex parte reexamination, with a certificate issuing in December 2024; the Xu Peicheng petitions named Shenzhen Yuyixin Lighting Technology as a real party in interest.