Secrecy seems to be an alternative option to patenting. If you are working in pure or applied research, you may discover something which is not only of scientific interest but also solves an existing technological problem or makes some other contribution to new technology. Your findings may have utility and significant commercial value. Patent may be a way to not only protect your hard work but also your employer. Without the ability to prevent other companies from taking the results of this effort, many new risky projects that could lead to important discoveries would not be taken.
Patent prevents complacency.
A patent is a document which usually consists of a cover page of a formal kind attached to a specification of the invention. The cover page announces or certifies that a patent has been granted and carries the official seal or stamp. A patent is a form of property created by law and granted by appropriate authority It gives the owner a right of action against unauthorised use of the invention defined in it. Mere possession of a patent is not enough and of little use. Deterrance is a negative concept.