Securing legal rights to your product or business idea is important in ensuring no one else can lay claim to it.
Patent law cases are rampant, entangling big names such as Samsung vs. Sharp and Microsoft vs. Salesforce.com.
In order to ensure that your idea really remains your idea, patenting and trademarks are the best way to protect your rights. You don't want to end up like Robert Kearns, the inventor of the intermittent windshield wiper; he faced a lifetime of lengthy court battles to prove the genius behind his idea.