About the responsibility of computer software end-users, we first review the United States v. Microsoft science and technology corporation, which is using its software cases. The infringement It is for the case in domestic led to a software end users the responsibility of extensive discussion. 1999 Microsoft authorized agent vanda intellectual property research center, which is found in building pirated compact discs, including Microsoft enjoy the copyright of ms-dos, MS-Windows95, MS-Office97 software. At that time in the notary personnel supervision, haidian industrial and commercial bureau to execute the law personnel these software the inventory. Microsoft to notarial deed for important evidence to the court, which is required for 1.5 million yuan, and ask the public apology. In the case of the trial, the accused daya think Microsoft submitted false evidence is notarial deed. Says vanda intellectual property research center, which has never been to the office, so the group Microsoft found using pirated said no facts according to law enforcement, haidian industry and commerce to the computer, which never had inventory. Science and technology group, which is to the court explained, Microsoft, which described the group two engineers admit "business of about 50 with a computer are a in the Microsoft software with piracy", in fact, the two men are not in daya technology group work, but within the building, which is another company-which technology Co., LTD. Of the employee, the two companies is an independent legal enterprise, so Microsoft against the wrong man, request the court to reject Microsoft's prosecution.