Stock code: 688472 Stock abbreviation: Canadian Solar Announcement No.: 2025-005

Canadian Solar Group Co., Ltd

Announcement on the litigation of the company and its wholly-owned subsidiaries

The board of directors and all directors of the company guarantee that there are no false records, misleading statements or material omissions in the content of this announcement, and assume legal responsibility for the authenticity, accuracy and completeness of its content in accordance with the law.

Important Content Notes:

The litigation stage of the case: the court has accepted the case and has not yet opened the trial.

Status of the listed company: Canadian Solar Group Co., Ltd. (hereinafter referred to as the "Company").

and its wholly-owned subsidiary, Changshu Canadian Solar Power Technology Co., Ltd. (hereinafter referred to as "Changshuolar").

Cooked Canadian Solar) is the defendant, of which the company is the first defendant and Changshu Canadian Solar is the second defendant.

The total amount involved in the case (plaintiff's claims): 1.058 billion yuan, and bear the reasonable expenses involved in the case

and litigation costs.

Impact on listed companies: Given that the above-mentioned lawsuit has not yet been heard, the final verdict is uncertain.

Therefore, it is not possible to judge the specific impact of the litigation on the company's current or future profits, etc., and the final reality

The impact is subject to the court's decision. The company pays close attention to and attaches great importance to this matter, and will resolutely advocate itself in accordance with the law

Actively respond to lawsuits and take relevant legal measures to effectively protect the company's name through legal channels

reputation and the interests of shareholders. The follow-up company will also be in accordance with the "Rules for the Listing of Stocks on the Science and Technology Innovation Board of the Shanghai Stock Exchange"

The relevant provisions of the above-mentioned litigation cases will be timely fulfilled in the obligation of information disclosure, please invest

Please be aware of the investment risks.

1. The basic situation of this lawsuit

On February 10, 2025, the Company received the Civil Summons (case) served by the Jiangsu Provincial High People's Court

No.: (2025) Su Zhi Min Chu No. 4, (2025) Su Zhi Min Chu No. 5) and the Civil Complaint and other relevant materials. Trina Solar Co., Ltd. ("Trina Solar") filed a lawsuit against the Company and its subsidiaries in connection with the patent dispute. As of the disclosure date of this announcement, the two cases have not yet been heard.

2. Basic circumstances of the case

(1) Parties to the litigation

Plaintiff: Trina Solar Co., Ltd

Unified Social Credit Code: 91320411608131455L

Address: No. 2, Tianhe Road, Tianhe Photovoltaic Industrial Park, Xinbei District, Changzhou City

Legal representative: Gao Jifan

Defendant 1: Canadian Solar Group Co., Ltd

Unified social credit code: 91320505691330112T

Residence: No. 199, Lushan Road, Suzhou High-tech Zone

Legal representative: Qu Xiaohua

Defendant 2: Changshu Canadian Solar Power Technology Co., Ltd

Unified Social Credit Code: 91320000790852143Y

Residence: Changsheng Road, Yangyuan, Xinzhuang Town, Changshu City

Legal representative: Qu Xiaohua

(2) Facts and reasons

The plaintiff alleges that the Company and its subsidiaries carried out the plaintiff's separate February 29, 2024 without the plaintiff's permission

and 4 March 2024 from Shangrao Xinyuan Viet Nam Technology Development Co., Ltd. (acquired from LG Corporation of South Korea)

The two patents involved in the transfer (Invention Patent No. ZL201710975923.2 "Solar Cell Module" and Invention Patent No. ZL201510892086.8 "Solar Cell and Manufacturing Method") infringed the plaintiff's patent right and caused economic losses to the plaintiff.

(3) Litigation demands

(1) Requesting an order to order the Company and its subsidiaries to immediately cease the infringement of the plaintiff's patents and destroy the relevant product inventory, equipment and related molds;

(2) requesting that the Company and its subsidiaries be ordered to jointly compensate the plaintiff for economic losses and punitive damages caused by their infringement, totaling RMB1.058 billion;

(3) The Company and its subsidiaries are requested to jointly compensate the plaintiff for reasonable expenses such as appraisal fees, attorney fees, notary fees, and investigation fees totaling RMB 4 million paid for rights protection, and bear all litigation costs of the case. 3. Other explanations of this lawsuit

The two Chinese invention patents filed by Trina Solar are: No. ZL201710975923.2 "Solar Cell Module" ("Patent 1") and No. ZL201510892086.8 "Solar Cell and Manufacturing Method Thereof" ("Patent 2").

In response to patent 1, Trina Solar filed a lawsuit against Changshu in May 2024 on suspicion of patent infringement

Some of Tesla's photovoltaic module products have applied for detention to Yangshan Customs. After Canadian Solar applied for release and explained the reasons for non-infringement, the goods were successfully cleared and released. At the same time, Changshu Canadian Solar formally submitted a request for invalidation of the patent to the National Patent Office of China in August 2024, which is currently under review.

In October 2024, Trina Solar filed a patent family for patent 2 in the U.S. corresponding to Patent 2

The U.S. federal court for the state of Delaware sued the company's wholly owned subsidiary in the U.S. and initiated a Section 337 investigation with the U.S. International Trade Commission (ITC). Currently, the case in the federal court of Delaware has been temporarily suspended pending a ruling by the U.S. International Trade Commission (ITC). And according to the latest case procedure notice, the U.S. International Trade Commission

The ITC is expected to hear the case in October 2025 and issue a preliminary ruling in January 2026, in 2026

A final ruling was made in May. Adani of India, which also belongs to the defendants, and Jiangsu Runyang New Energy Technology Co., Ltd. of China and its subsidiaries have filed patent invalidation applications with the United States Patent and Trademark Office (USPTO), and the company is paying close attention. In addition, Canadian Solar Changshu also formally filed a request for invalidation of Patent 2 with the National Patent Office of China in November 2024, which is currently pending.

Since Trina Solar has not filed a lawsuit in court since it applied for customs detention in May 2024, Changshu Ah

In November 2024, Tess submitted confirmation of Patents 1 and 2 to the Suzhou Intermediate People's Court

In December 2024, the Suzhou Intermediate People's Court accepted the case and determined the first one

At the time of the second trial, the case numbers are (2024) Su 05 Min Chu No. 1482 and No. 1483 respectively.

In addition, the company has filed a lawsuit against Trina Solar in the Suzhou Intermediate People's Court in October 2024

The two patents of Tess are (2024) Su 05 Min Chu No. 1385 and (2024) Su 05 Min Chu 1399

In these two cases, the company requested Trina Solar to cease the infringement and pay the company a total of RMB 100 million in compensation. Both cases are still ongoing.

4. The impact of this lawsuit on the company

The Company has conducted a thorough research and analysis of Trina Solar's two patents in question, and believes that there is strong evidence to prove that these two patents should be invalid, and that the Company's products and processes do not infringe the two patents. Based on the two patents, Trina Solar claimed a total of more than 1 billion yuan from the company and Changshu Canadian Solar

Legal basis.

In view of the fact that the above-mentioned litigation has not yet been tried in court and the final judgment is uncertain, it is not yet possible to judge the specific impact of the litigation on the company's current or future profits, and the final actual impact is subject to the court's judgment. The company pays close attention to and attaches great importance to this matter, resolutely asserts its legitimate rights and interests in accordance with the law, actively responds to the lawsuit and takes relevant legal measures, and effectively protects the company's reputation and the interests of shareholders through legal channels. In accordance with the relevant provisions of the Rules for the Listing of Stocks on the Science and Technology Innovation Board of the Shanghai Stock Exchange, the Company will fulfill its information disclosure obligations in a timely manner on the progress of the above-mentioned litigation cases, and investors are advised to pay attention to investment risks.

The announcement is hereby made.

Board of Directors of Canadian Solar Group Co., Ltd

February 12, 2025