Sojung Yun

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Let me verify the possible prior-firm affiliation and check for IPR/PTAB work.

Sojung Yun — Associate, White & Case LLP (Intellectual Property group)

Specialty / focus. Yun's practice is patent litigation within White & Case's IP group. Her technical background is electrical engineering — B.S. and M.S. in EE from KAIST, plus pre-law-school work as a computer-vision research engineer — which fits the hardware/electronics-facing matters on her docket. Her one tracked matter involves solar photovoltaic balance-of-system hardware (trunk bus cable assemblies and connectors), an electro-mechanical technology area. Public sources do not support a broader technology profile (no Wi-Fi/standards, pharma, or software litigation is documented for her).

Side preference. On the authoritative data she is exclusively defense-side: 0 plaintiff appearances, 1 defendant appearance. That single appearance is for Voltage, LLC — an operating company — in Shoals Technologies Group, LLC v. Voltage, LLC. One important caveat: a same-named patent litigator is profiled by Law360 and Martindale as a Paul Hastings associate in Palo Alto with a mixed docket (plaintiff-side Webroot v. Trend Micro; defendant-side Demaray v. Intel; matters involving AO Kaspersky Lab, all in the Western District of Texas). That is likely but not confirmed to be the same attorney — the California State Bar record for "So Jung Yun" lists Paul Hastings as employer, and White & Case's bio states she is admitted in California, which is consistent with a lateral move — but the prior-firm docket should be treated as unverified for her.

Notable matter. The Shoals–Voltage dispute is her most prominent tracked case. White & Case defended Voltage in ITC Investigation No. 337-TA-1365 (photovoltaic connectors/components). On January 14, 2025, the full Commission issued a final determination of no violation of Section 337, reversing the ALJ's final initial determination of infringement on the sole remaining patent (the '153 patent) and revising construction of the key "aperture" claim term; the firm characterized it as a clean sweep across all three asserted patents, and Shoals' share price reportedly fell more than 20% the following day. Law360's Jan. 17, 2025 Litigator of the Week coverage named Yun among the associates on the team alongside partners Yar Chaikovsky, Philip Ou, Jordan Coyle and Bruce Yen. Shoals has appealed to the Federal Circuit, and the parallel M.D.N.C. district court action was stayed. In the follow-on ITC investigation (337-TA-1438) on Shoals' newer '375/'376 patents, the Commission found a violation and issued an exclusion order in June 2026 — but there is no public confirmation of Yun's role in that later phase.

PTAB / IPR, bar, education. The Shoals–Voltage dispute has generated PTAB activity (Voltage's PGR2024-00022 and later IPR petitions), but public filings do not identify Yun as counsel of record in any IPR/PGR, so regular PTAB practice is not established from available sources. Bar/education: admitted in California; J.D., University of Wisconsin Law School, where she was a Managing Editor of the Wisconsin International Law Journal.

Note on sourcing: the firm biography and the White & Case/Law360 coverage of the ITC win are solid; the Paul Hastings-side docket and her individual PTAB role are flagged as unconfirmed.