How long doea canon provide service and parts for?

I'm wondering if you have a lens or body, how long will canon continue to service equipment and sell parts to the end user? Also, how long are they required to make parts available?

To the first part of your question I have no answer. To how long parts must be available, California is one of the few States that regulate this (see below). So if parts are available for a specified period in California, they are likely available in the States. Some very specific items fall under Federal regulations; one that comes to mind is I think a 7 year warranty on automobile emissions systems. Obviously if you warranty something for 7 years then parts must be available for the 7 year period, but not much beyond that period.

(a) Every manufacturer making an express warranty with respect to an electronic or appliance product described in subdivision (h), (i), (j), or (k) of Section 9801 of the Business and Professions Code, with a wholesale price to the retailer of not less than fifty dollars ($50) and not more than ninety-nine dollars and ninety-nine cents ($99.99), shall make available to service and repair facilities sufficient service literature and functional parts to effect the repair of a product for at least three years after the date a product model or type was manufactured, regardless of whether the three-year period exceeds the warranty period for the product.(b) Every manufacturer making an express warranty with respect to an electronic or appliance product described in subdivision (h), (i), (j), or (k) of Section 9801 of the Business and Professions Code, with a wholesale price to the retailer of one hundred dollars ($100) or more, shall make available to service and repair facilities sufficient service literature and functional parts to effect the repair of a product for at least seven years after the date a product model or type was manufactured, regardless of whether the seven-year period exceeds the warranty period for the product.

Good to know. Thanks for the info. I know Some companies make parts for a very log time. Volkswagen comes to mind. I have a 13 year old golf that I can still order individual screws and random parts for. I'm assuming the 7 years starts at the end of production or discontinuation of the product. So I would think you could still order parts at will for something like a 50d....