Their straight-sets win in the first round was by no means straightforward, before the Finn and Brit had to dig deep to beat Mac Kiger and Patrik Trhac in three sets in the second round.
The third round managed to bring a new kind of pressure for Heliovaara and Patten at this year's Wimbledon, as they went a set down for the first time in the competition. A loss of serve in game three looked inconsequential as they broke back immediately in the next game.
The momentum looked to be continuing despite not taking either break point chance in game eight, only for Pavlasek and Rikl to break through again in the 11th game and wrap up the set 7-5 in the next.
However, the top seeds again showed exactly why they are ranked so highly by forcing a break of serve at the first opportunity in the second set, racing into a 3-0 lead, and in a much more fluid set, that was all they needed to take it, 6-3.
In the final set, the match turned against Heliovaara and Patten when the Czechs broke serve in game four en route to building a 4-1 lead, but yet again the world number ones showed their mettle, breaking back in game seven before levelling the set at 4-4.
Serve being held for the next four games set up a 10-point tiebreak to settle the match, in which Heliovaara and Patten were leading 4-3 before back-to-back losses of serve from the unseeded duo saw the Finnish-British pair go 6-3 and then 7-3 up, only for their opponents to break back before closing to 7-6.
Two more holds from the favourites set up match point, which they took at the first time of asking on the Czechs' serve, winning the tiebreak 10-6 and the match to take their place in the last eight.