Your granted patent gives you the right exclude others from infringing your patent, for example, by making, constructing and using the invention and selling it to others to be used.
However, your granted patent does not protect your patented product or method from infringing patents owned by a third party.
For example, if you have a patent for a pencil with an eraser attached, you can exclude others from making a pencil with an eraser as protected by your patent. However, if you sell your pencil with an eraser attached, you may infringe a patent for the pencil.
We provide freedom-to-operate opinions in Canada to help you evaluate the risk of infringing on the patents of third parties if you practice your patent.
Freedom-to-operate opinions sometimes are also known as patent clearance opinions.