AO 458 (Rev. 06/09) Appcarance of Counsel UNITED STATES DISTRICT COURT for the Western District of Texas NEODRON LTD Plaintiff V. SAMSUNG ELECTRONICS CO., LTD. ET AL Defendant Case No. 6:19-cv-00323-ADA APPEARANCE OF COUNSEL To: The clerk of court and all parties of record I am admitted or otherwise authorized to practice in this court, and I appear in this case as counsel for: SAMSUNG ELECTRONICS CO., LTD AND SAMSUNG ELECTRONICS AMERICA, INC. Date: 06/17/2019 /s/ Ryan K. Yagura Attorney's signature Ryan K. Yagura - SBN 24075933 Printed name and bar number O'MELVENY & MYERS LLP 400 South Hope Street, 18th Floor Los Angeles, CA 90071 Address ryagura@omm.com E-mail address (213) 430-6000 Telephone number (213) 430-6407 FAX number