Red tape—the deliberate use of formalities and trivialities to delay a matter or confuse the issue.
In law, legal trickery refers to the process of creating complex and convoluted legal documents or procedures for the purpose of gaining an advantage or benefit. This may involve using legal terms and rules that may be incomprehensible to ordinary people in order to confuse or deceive them.
An example of legal trickery might be a lawyer who drafts a contract in such a way as to limit the rights and obligations of one of the parties, or who uses ambiguous language that can be interpreted in favor of his client.