Patent 7293177 was granted and assigned to F-Secure on November, 2007 by the United States Patent and Trademark Office.
A method of preventing an electronic file containing a computer virus from infecting a computer system using the Symbian™ operating system, the method comprising the steps of scanning files using an anti-virus application, and if an infected file is identified, maintaining the file in an open non-sharing state, whereby other applications running on the computer system may not operate on an infected file.