Licensing is a business arrangement in which one company gives another company permission to manufacture its product or service for a specified payment. No one wants to recreate the wheel, so if your brand is well recognized, you can license the rights to your brand for use by another company.
Mergers and acquisitions refer to the management, financing, and strategy involved with buying, selling, and combining companies. A merger is the combination of two similarly-sized companies combined to form a new company. An acquisition occurs when one company clearly purchases another and becomes the new owner.
Because brands are a critical asset of your business and as your business acquires new products or services, you should continue trademarking the new additions to build and protect the stronger brand.