China-based private investigators receive prison terms

Managing IP is part of Legal Benchmarking Limited, 1-2 Paris Gardens, London, SE1 8ND

Copyright © Legal Benchmarking Limited and its affiliated companies 2026

Accessibility | Terms of Use | Privacy Policy | Modern Slavery Statement

China-based private investigators receive prison terms

Peter Humphrey and Yu Yingzeng, the China-based investigators hired by GlaxoSmithKline to investigate corruption allegations, have been sentenced to 30 months and 24 months respectively for illegally obtaining private information

In a one-day trial, the Shanghai Intermediate Number One Court found that the British Humphrey (right) and Yu, his American wife, broke the law by illegally obtaining private information in the course of their investigations. In addition to the jail sentences, Humphrey received a RMB 200,000 fine ($32,500), while Yu was fined RMB 150,000. Humphrey will also be deported.

Humphrey and Yu have 10 days to appeal.

Donald Clarke of the Chinese Law Prof Blog has a copy of the Chinese language transcript posted by the court.

Humphrey and Yu are the founders of the private investigation firm ChinaWhys. In April 2013, GlaxoSmithKline hired the firm to investigate an anonymous email alleging that GSK employees were engaging in an elaborate bribery scheme. The detailed allegations also contained a video of GSK China head Mark Reilly in what appeared to be his Shanghai apartment.

In July 2013 Chinese authorities arrested Humphrey and Yu. Humphrey soon after issued an apology on Chinese television for his company's actions and said that he never intended to break Chinese law. GSK also admitted that its China-based executives had engaged in illegal activities.

The ChinaWhys case has been closely watched by international companies, as many regularly rely on private investigators to conduct due diligence on investments, business partners and other aspects of its business. This is especially true in IP enforcement, where companies often engage investigators to track down the sources of counterfeit goods.





more from across site and SHARED ros bottom lb

More from across our site

As UPC activity continues to drive strategic hiring and expansion, recent rulings have delivered a notable win for Samsung, and further uncertainty in the long-running GSK-Pfizer vaccine battle
The merger of Taylor Wessing’s UK operation with US firm Winston Strawn was a response to a strategic conundrum, its leaders say
Over the past 23 years, LawPlus has expanded from Thailand to Myanmar and built extensive international partnerships. What’s next?
Patrade has turned to experienced IP practitioner and business development leader Anders Isaksson to strengthen its commercial strategy and expand its reach to clients across Scandinavia
Cassie Hill, partner at Mishcon de Reya, discusses rebuilding client relationships after maternity leave and the pressures facing women at a pivotal stage of their career
Matthew Asbell discusses why empathy is important in law, being inspired by diverse workplaces and working on the latest, greatest large language model
The new partners add patent trial depth in high-value technology sectors including semiconductors, software, and cloud computing
From seller vetting and proprietary screening technology to brand collaboration and industry partnerships, Temu explains how its intellectual property enforcement programme combats infringement on its marketplace
A handful of US firms have quietly invested in European patent talent. Recent moves by Baker Botts and K&L Gates suggest that trend may be accelerating
Loke Khoon Tan and Stephanie Yip at Dentons explain what brand owners need to know ahead of January 1 2027, when updates to China’s Trade Mark Law come into force
Gift this article