See below instructions for arriving by public transit.
From the airport:
Take the S-bahn train S8 Herrsching to Daglfing station. From there, transfer to bus number 183 Messestadt West and exit at Paul-Henri-Spaak-Straße. Brainlab headquarters is a two minute walk from the bus stop.
From downtown Munich:
Take the subway U2 Messestadt Ost and exit at the second to last station: Messestadt West. Brainlab headquarters is a 5 minute walk from the station.