Answer: Trade secrets
Step-by-step explanation:
Patent is a license from the government that is given to a a firm for a period of time and this gives the firm the sole right to sell a particular product. Patent is normally given to firms when there's an innovation by the firm.
A trademark is an intellectual property and it consist of symbols, words, design or phrase which helps to differentiate one company from another company.
Copyright simply means the right that's given to an individual or firm to copy. It is the legal right that the owner of an intellectual property has. It is a crime when one copies the work of someone else without the approval from the owner of the work.
Trade secrets are the formula, recipe or process used by a company during production process which gives such company an edge over its competitors.
With regards to the definition above, the answer is a trade secret. This is because some industrial processes used by his former company are being exposed and told to the new company.