What is the fine-grained topic of the following text: Mr. Perry is an accomplished appellate lawyer who has briefed and argued many cases in the Supreme Court of the United States—including winning the landmark decisions in Alice Corp. v. CLS Bank and Janus Capital Group v. First Derivative Traders —and the federal courts of appeals. Only return the topic.
Mr. Perry's career as an appellate lawyer in the Supreme Court of the United States.