In a unanimous decision debunking the common misunderstanding that former employees can use information they retain through memory (as opposed to information contained in materials pilfered from former employers) without violating trade secret law, the Ohio Supreme Court ruled that a company’s confidential customer list is a protected trade secret even if a former employee accesses it strictly from memory.

In Al Minor & Assoc., Inc. v. Martin, 2008-Ohio-292, Martin, a pension analyst, signed neither a non-competition nor a non-solicitation agreement during his employment with Al Minor. When he resigned to establish a competing business, Martin contacted and successfully …