Bidding to overturn a Court of Arbitration for Sport ruling, speed skater Claudia Pechstein arrived at Germany's highest civil court, the Federal Court of Justice in Karlsruhe, on Tuesday (8th March).
Claudia Pechstein, Germany's most successful Winter Olympic athlete, is fighting against a ruling made by the Court of Arbitration for Sport (CAS) to uphold a two-year ban for blood doping, which was imposed by the International Skating Union.
The ISU imposed the ban in June 2009 after alleged irregular readings in Pechstein's blood passport, having analysed samples taken over her career.
It was a judgement that Pechstein has been fighting for almost seven years.
In January 2015 the Munich Higher Regional Court ruled against the CAS and the Swiss Federal Tribunal, and on Tuesday (8th March) 44-year-old Pechstein appeared in Germany's Federal Court of Justice in Karlsruhe.
Germany's highest civil court will decide if Pechstein can sue the International Skating Union for 4.4 million euros in lost income.
Since the ban she has subsequently won World Championship medals in 2011, 2012 and 2013.
She just missed out on a 10th Winter Olympic medal at the Sochi Games in 2014.
She has claimed five Olympic gold medals, two silver and two bronze in her career.