Here's an example:

I agree that all right, title, interest in and to any and all copyrightable material, notes, ... discoveries, and trade secrets conceived, discovered, ... or reduced to practice by me, solely or in collaboration with others, during the period of time I am in the employ of <Company> (including during my off-duty hours), or with the use of Company's equipment, ... or Company Confidential Information, and any copyrights, ... or other intellectual property rights relating to the foregoing ... are the sole property of <Company>