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

The firm has added two leading damages specialists as it expands beyond technical analysis and deepens its role in the economics of IP litigation
Josh Seidenfeld, partner at DLA Piper, outlines the emerging legal trends that drive the future of life sciences innovation and how stakeholders can prepare for the future
South Korea's One Law Partners is combining with boutique firm Minwho Law Group to leverage global expansion of K-content and build a broader offering spanning IP, tech and regulatory advisory work
Russell Kennedy's Gina Tresidder on juggling matters, delivering hard truths, and why IP ownership is rarely as simple as people think
Attorney Oran Friar and trainee attorney Harry Cunliffe at Reddie & Grose, share that patent filings for clinical LLMs are surging, but success in the UK and Europe hinges on demonstrating technical innovation
Implementers can use the UK courts to seek FRAND terms for patent pool licences
The first credible UPC spinouts are growing, and they are coming from elite patent litigation teams, suggesting specialist litigators may no longer need large platforms to compete
Voyage IP has hired a veteran IP leader from Spruson & Ferguson as its head of trademarks, as well as another consultant who will boost the firm’s commercial offering
Lawyers say unwritten appearance expectations can disproportionately affect women and junior talent, making proactive guidance a growing responsibility for law firm leaders
Apple’s lawsuit against OpenAI, which features Tier 1-ranked disputes firms on both sides, reflects how trade secrets litigation is becoming a prominent competition feature
Gift this article