Hsieh Cheng-peng and Yang Tsung-hua were the defending champions, but only Cheng-peng participated this year. He partnered with Francis Casey Alcantara and won the final 6–4, 6–2, over Mikhail Biryukov and Yasutaka Uchiyama.
Daniel Muñoz-de la Nava and Sergio Pérez-Pérez were the defending champions but decided not to participate.
Nikola Mektić and Antonio Veić won the title, defeating Marin Draganja and Dino Marcan 7–6(7–5), 4–6, [10–3] in the final.
Frederik Nielsen and Ken Skupski were the defending champions but decided not to participate.
Brydan Klein and Dane Propoggia won the final 7–5, 2–6, [14–12] against Marin Draganja and Dino Marcan.
Benoît Paire and Stanislas Wawrinka were the defending champions, but lost in the first round to top seeds Rohan Bopanna and Aisam-ul-Haq Qureshi.
Johan Brunström and Frederik Nielsen won the title, defeating Marin Draganja and Mate Pavić in the final, 6–2, 4–6, [10–7].
Julian Knowle and Filip Polášek were the defending champions, but Polášek decided not to participate. Knowle played alongside Johan Brunström, but they lost in the quarterfinals to Marcelo Demoliner and Purav Raja.
Johan Brunström and Raven Klaasen were the defending champions but decided not to participate.
Rohan Bopanna and Colin Fleming were the defending champions, but Bopanna chose not to participate. Fleming played alongside Ross Hutchins, but lost in the quarterfinals to Marin Draganja and Mate Pavić.
Julien Benneteau and Édouard Roger-Vasselin won the title, defeating Paul Hanley and Jonathan Marray in the final, 4–6, 7–6(8–6), [13–11].
Jamie Murray and John Peers were the defending champions, but lost in the quarterfinals to Facundo Bagnis and Federico Delbonis.
Andre Begemann and Robin Haase won the title, defeating Rameez Junaid and Michal Mertiňák in the final, 6–3, 6–4.
Marin Draganja and Nikola Mektić were the defending champions but only Nikola Mektić returned, partnering Goran Tošić, but lost in the first round to Dino Marcan and Antonio Šančić.
Johan Brunström and Raven Klaasen were the defending champions, but Klaasen chose not to participate. Brunström plays alongside Philipp Oswald, but they lost in the first round to Tomasz Bednarek and André Sá.
Mariusz Fyrstenberg and Marcin Matkowski won the title, defeating Marin Draganja and Henri Kontinen in the final, 6–7(3–7), 6–3, [10–8].
Marin Draganja and Florin Mergea were the defending champions, but Mergea decided not to participate this year. Draganja paired up with Henri Kontinen, but lost in the first round to Martin Kližan and Lukáš Rosol.
Jamie Murray and John Peers won the title, defeating Juan Sebastián Cabal and Robert Farah in the final, 2–6, 6–3, [10–8].
Andreas Beck and Jan Mertl are the defending champions, but chose not to defend their title.
Sander Arends and Adam Majchrowicz were the defending champions but chose not to defend their title.
Johan Brunström and Andreas Siljeström were the defending champions but lost in the quarterfinals to Marin and Tomislav Draganja.
Sander Arends and Tristan-Samuel Weissborn were the defending champions but only Weissborn chose to defend his title, partnering Dino Marcan. Weissborn lost in the quarterfinals to Hugo Nys and Max Schnur.
Sergey Betov and Ilya Ivashka were the defending champions but only Ivashka chose to defend his title, partnering Aldin Šetkić. Ivashka lost in the semifinals to Lukáš Rosol and Franko Škugor.
Roman Jebavý and Jan Šátral were the defending champions but chose not to defend their title.
Kevin Krawietz and Albano Olivetti were the defending champions but lost in the first round to Aliaksandr Bury and Andreas Siljeström.
Dino Marcan and Tristan-Samuel Weissborn were the defending champions but chose not to defend their title.
Marin Draganja and Dino Marcan were the defending champions but did not defend their title as they had both retired from professional tennis.
Attila Balázs 
Fabiano de Paula 
Johan Brunström 
Dino Marcan 
