Does the patent office control the fees charged by the patent attorneys or agents for their services?

No. This is a matter between you and your patent attorney or agent in which the U.S. Patent and Trademark Office takes no part. To avoid misunderstanding, you may wish to ask for estimate charges for: (a) the search, (b) preparation of the patent application, and (c) U. S. Patent and Trademark Office prosecution.

USPTO FAQ - Questions and Answers (14AUG2003)