The case of leading Irish trainer Philip Fenton for alleged possession of steroids is due to be heard in court on Thursday.
The 49-year-old is facing eight charges over treatments and medicines found by state inspectors at his County Tipperary yard in January 2012.
At a hearing last month, Fenton's legal team were given four weeks to file submissions on issues they claim to have found on summonses detailing the prosecution.
The case is listed for mention at Carrick-on-Suir District Court on Thursday morning, where the submissions are expected to be discussed.
Judge Terence Finn, who heard the case when it was before the court last month, said they would be examined to see whether they affect the district court's jurisdiction ahead of any trial.
The case against Fenton was brought about by the Irish Department of Agriculture, Food and the Marine following an inspection of his yard on January 18, 2012.
The trainer faces eight charges in relation to alleged possession of Nitrotain and Ilium Stanabolic and prescription medicines including Engemycin 10%, Neomycin Penicillin, Marbocyl 10%.
If a trial goes ahead on the charges, the court has been told that 12 to 15 witnesses are expected to be called, including one from France.
No plea has been entered.
Fenton failed to strike with any of his runners at the Cheltenham Festival last week, with the Gigginstown House Stud-owned Last Instalment unseating his rider in the Gold Cup and subsequently retired.
Dunguib also bowed out after breaking down when pulled up in the Coral Cup.
Fellow owner Barry Connell opted not run either of his Festival contenders, The Tullow Tank and Volvalien, due to uncertainty over the case.