News Room


May 2020

Hailong Sun

PRACTICE AREAS AND INDUSTRIES SERVED Mr. Sun has 20 years of experience in patent prosecution, patent invalidation and litigation, patent infringement analysis, trademark prosecution and litigation. Prior to joining Osha Liang, Mr. Sun gained considerable experience in patent prosecution and Chinese IP litigation while working at another prominent IP firm. His areas of technical expertise include: electronic engineering, semiconductors, computers, information and communication. EXPERIENCE Over...

Read More


Feb 2019

Keelin Hargadon

PRACTICE AREAS AND INDUSTRIES SERVED Keelin Hargadon’s practice area encompasses trademark, trade secret, copyright and litigation, with a focus on trademark prosecution and enforcement on both the domestic and international level. EXPERIENCE Keelin has worked with businesses of all sizes in industries such as makeup and personal care, financial services, high-tech, apparel, pet products, food and beverage, and oil and gas.  This varied experience allows Keelin...

Read More


Jul 2015

Yen-Kai (Eldwin) Hseu

PRACTICE AREAS AND INDUSTRIES SERVED Eldwin Hseu assists with prosecuting foreign and domestic patents in the electronics, mechanical, medical/healthcare, and telecommunications industries for the firm’s top clients. EDUCATION Prior to joining Osha Liang, Mr. Hseu worked as a Graduate Research Assistant at the Birck Nanotechnology Center at Purdue Discovery Park. His main research focused on utilizing an Atomic Force Microscope (Bio-AFM) to develop a nano-level...

Read More