Yes, purchasing full intellectual property for a motor control design is an option but not one which is commonly pursued (or indeed encouraged).
The core business model through which we deliver value for money and attempt to spread technically advanced controllers at competitive prices is built on the accumulation of intellectual property and design knowledge then enabling us to deliver lower cost, customised motor control solutions. It is therefore clear that if we sold the design rights for every motor controller we had ever developed we would not be able to do this.
That said, we do understand that with certain projects, particularly those which are moving towards patents and copyright protection, that this is a key requirement. In cases such as this we will be happy to explore your requirements and advise. Sometimes this may include licensing, sometimes it can include a restricted intellectual property transfer agreement in which you purchase the design rights to the controller that you require with key documentation covering the limitations of this.