Dustin Brown and Rameez Junaid were the defending champions but chose not to defend their title.
Sander Arends and Tristan-Samuel Weissborn were the defending champions but chose not to defend their title.
Grégoire Barrère and Tristan Lamasine were the defending champions but only Lamasine chose to defend his title, partnering Hugo Nys. Lamasine lost in the quarterfinals to Gero Kretschmer and Alexander Satschko.
Alexander Satschko and Simon Stadler were the defending champions but only Satschko chose to defend his title, partnering Gero Kretschmer. Satschko lost in the quarterfinals to Sander Gillé and Joran Vliegen.
Miguel Ángel Reyes-Varela and Max Schnur were the defending champions but chose not to defend their title.
Andre Begemann and Leander Paes were the defending champions but chose not to defend their title.
Federico Gaio and Stefano Napolitano were the defending champions but only Napolitano chose to defend his title, partnering Salvatore Caruso. Napolitano withdrew in the semifinals.
Jonathan Eysseric and Édouard Roger-Vasselin were the defending champions but only Eysseric chose to defend his title, partnering Andre Begemann. Eysseric successfully defended his title, defeating Tomasz Bednarek and David Pel 6–3, 6–4 in the final.
Evgeny Donskoy and Mikhail Elgin were the defending champions but chose not to defend their title.
Mikhail Elgin and Igor Zelenay were the defending champions but chose not to defend their title.
Roman Jebavý and Igor Zelenay were the defending champions but chose not to defend their title.
Julian Knowle and Adil Shamasdin were the defending champions but chose not to defend their title.
Sander Gillé and Joran Vliegen were the defending champions but only Vliegen chose to defend his title, partnering Rameez Junaid. Vliegen lost in the quarterfinals to Pedro Martínez and David Vega Hernández.
Sander Gillé and Joran Vliegen were the defending champions but chose not to defend their title.
Julian Knowle and Igor Zelenay were the defending champions but only Zelenay chose to defend his title, partnering Denys Molchanov. Zelenay lost in the quarterfinals to Andre Begemann and Dustin Brown.
Sander Arends and Antonio Šančić were the defending champions but chose not to defend their title.
Tim Pütz and Jan-Lennard Struff were the defending champions but chose not to defend their title.
Wesley Koolhof and Artem Sitak were the defending champions but chose not to defend their title.
Sander Arends and Antonio Šančić were the defending champions but only Arends chose to defend his title, partnering Romain Arneodo. Arends lost in the quarterfinals to Simone Bolelli and Daniele Bracciali.
Roman Jebavý and Andrés Molteni were the defending champions, but chose not to participate together. Jebavý played alongside Matwé Middelkoop but lost in the semifinals to Philipp Oswald and Filip Polášek. Molteni partnered Leonardo Mayer but lost in the first round to Oliver Marach and Jürgen Melzer.
