An individual trademark is a trademark that distinguishes the goods (products) or services of one company from those of others. 99% of trademarks are individual trademarks.
A collective trademark is a trademark that distinguishes one or more common characteristics of goods (products) or services. The holder of a collective trademark does not use the trademark itself but supervises the use of the trademark by others who have to fulfil certain criteria in order to use it. These criteria have to be laid down in 'regulations for use and control of the trademark' which have to be submitted when the trademark is filed. A well-known example of a collective trademark is the Woolmark symbol.