Apple Inc. v. Chen Shi, Guangdong OPPO Mobile Communications Co., Ltd., et al. Complaint for Trade Secret Infringement and Breach of Contract

Key Chapter Title List

1. Introduction
2. Parties to the Lawsuit
3. Jurisdiction and Venue
4. Division Assignment
5. Background
6. 1. Apple's Trade Secret Technology is Crucial to Its Business and Success
7. 2. Apple Diligently Protects Its Trade Secret Information
8. 3. The OPPO Defendants Recognized the Value of Apple's Trade Secrets
9. 4. The OPPO Defendants' Leadership Secretly Communicated with Chen Shi Regarding His Plan to Misappropriate Apple's Trade Secrets Before His Departure
10. 5. Chen Shi Transferred Apple's Trade Secrets for Himself and His New Employer, the OPPO Defendants, Before His Resignation
11. First Cause of Action: Misappropriation of Trade Secrets in Violation of the Defend Trade Secrets Act
12. Second Cause of Action: Breach of Contract
13. Prayer for Relief
14. Jury Trial Demand

Document Introduction

This document is the formal complaint filed by Apple Inc. with the United States District Court for the Northern District of California on August 21, 2025, case number 5:25-CV-7105. The lawsuit is against former Apple employee Dr. Chen Shi and his new employers, Guangdong Oppo Mobile Telecommunications Corp., Ltd. (OPPO) and InnoPeak Technology, Inc. (InnoPeak, collectively referred to as the OPPO Defendants), alleging trade secret misappropriation and breach of contract. The complaint details the high sensitivity of the technologies involved, the alleged pattern of misconduct by the defendants, and the rigorous measures Apple has taken to protect its intellectual property.

The core allegations center on the actions of Dr. Chen Shi, a former Apple Watch sensor system architect. The complaint alleges that between April and June 2025, after accepting a job offer from the OPPO Defendants with a planned start date of June 30, Chen Shi concealed from his Apple colleagues the fact that he would be joining a direct competitor. During this period, he systematically scheduled numerous one-on-one meetings to gather information from Apple Watch technology team members regarding ongoing research and development on optical sensors, temperature sensors, ECG sensors, and more. More seriously, just days before his departure, Chen Shi downloaded a large volume of confidential documents containing core technical details from Apple's protected internal file systems and transferred them to a personal USB storage device, intending them for use by the OPPO Defendants.

The complaint provides a detailed chain of evidence, including encrypted communication records between Chen Shi and Dr. Zeng Zijing, Vice President of OPPO's Health Business, among others. In these communications, Chen Shi explicitly stated he was "internally reviewing various materials" and "doing a lot of 1-on-1 meetings" to "collect as much information as possible," which he would later share with OPPO. OPPO personnel did not discourage this but instead encouraged it. The complaint also notes that Chen Shi searched for keywords such as "how to completely wipe a MacBook" and "can anyone see what files I opened on a shared drive" in an attempt to cover his tracks.

In the legal arguments section, the complaint elaborates on the basis for the court's jurisdiction over the parties, including the defendants' substantial business presence in the Northern District of California, the jurisdiction and venue selection clauses in the confidentiality and intellectual property agreements signed by Chen Shi, and the close connection of the infringing acts and resulting harm to this district. The complaint describes OPPO and InnoPeak as essentially interchangeable entities, jointly operating their U.S. research center in Silicon Valley, and directly benefiting from and competing within the same talent and technology ecosystem as Apple.

This document is not merely a legal filing but also an in-depth case study on the protection of trade secrets—a core element of competition in the high-tech industry. It reveals the intense competition for talent and technology among multinational tech companies and the typical legal conflict patterns that arise. For defense researchers, policy analysts, and business intelligence professionals studying intellectual property law, corporate compliance, commercial espionage, Sino-U.S. tech competition, and cross-border legal enforcement, this complaint provides first-hand material on the specific methods of alleged infringement, the effectiveness of corporate protective measures, and the construction of related legal claims. The health sensing technologies involved in the document, particularly ECG and blood oxygen saturation monitoring applied to wearable devices, are not only at the forefront of consumer electronics but are also relevant to broader strategic and technical issues such as biometric monitoring and personal health data security.