Forestalling is a type of marketing offence in English common law. The term describes the unacceptable methods of influencing the market by dissuading persons from bringing their goods or provisions to the market or persuading them to enhance the price, when there or victual coming in the way of the market. Typically, forestalling referred to the practice of intercepting sellers on their way to a market, buying up their stock, then taking it to the market and marking it up. It could also mean the creation of partnerships or agreements under which goods would not be brought to market. Forestalling is often used and understood as a catch all clause for marketing offences. The term is now obsolete.