You should probably have your own lawyer draft something for me, but here's some of my own standard language. Basically, it grants the client an unlimited licen

You should probably have your own lawyer draft something for me, but here's some of my own standard language. Basically, it grants the client an unlimited license while maintaining all intellectual property rights. It also acknowledges that I bring intellectual property to the table when I start and that in no way belongs to the client. "Client shall have a perpetual, irrevocable, nontransferable license to use and copy the materials and deliverables created, discovered, invented, developed or prepared in the course of this agreement (“Deliverables”) and prepare derivative works based on the Deliverables for its internal use. All other rights in the Deliverables remain in and/or are assigned to Consultant. Client acknowledges that the Deliverables may in whole or in part be created using Consultant’s prior acquired knowledge, skill and expertise, and may include Consultant’s proprietary information and prior developed intellectual property of Consultant, which Consultant shall continue to own and have an unrestricted right to use for other purposes. Consultant may retain archival copies of the Deliverables for Consultant's internal use, and nothing herein shall prevent Consultant from continuing to use Consultant's information, knowledge, skill and/or expertise for other purposes."