This work proposes a characterisation of the patenting behaviours of firms. It relies on patent data linked to firm data from a commercial dataset, regards firms of 20 or more employees located in 15 countries, and refers to the period 1999-2010. The way in which patent assignees’ names are linked to firm names is explained, and the coverage and representativeness of the firm database used is discussed using information from structural business statistics. The profile of patenting and non-patenting firms is delineated on the basis of characteristics such as firm size, ownership, firm age and industry, and of combinations thereof. Statistics related to the sector-specific patterns of patent renewals are also shown.