Trademark infringement: refers to the unauthorized use of a registered trademark by another person for commercial purposes without the permission of the trademark owner, or the use of a major part of another person's registered trademark as his own trademark, and the use of the same or similar goods Generate trademark confusion to deceive consumers. In the following cases, which of the following is not a trademark infringement? ['Company A uses a trademark similar to its registered trademark on goods similar to Company B without the permission of trademark owner B.', 'A towel factory registered the "419" brand trademark. After the market was opened, some companies added a certain brand before the "419" brand, so that the "419" trademark was converted into a product name.', 'A domestic company did not use the "IBM" trademark directly on its products, but used it in advertising and other promotional activities.', 'The name of a domestic shopping mall uses the real estate "Asia" brand name that has been approved for registration by a real estate company.']