In-depth analysis of the Li-ion patent landscape, focussing on cell materials and technologies, including further analysis of NMC and Li- and Mn-rich cathodes, silicon anodes, liquid electrolytes, separators and carbon nanotube and graphene use. Highlighted are key technology trends, geographical activity, key players and assignees, and player rankings. Furthermore, example patents are reviewed and discussed in the context of current Li-ion market developments alongside a discussion of future technology directions.