Last week world cycling's governing body controversially opted not to grant the Russian team a World Tour racing licence for next season.
Katusha, who finished second in the standings in 2012 and have world number one Joaquim Rodriguez of Spain riding for them, immediately appealed to the Court of Arbitration for Sport.
And despite having now seen an explanation for the UCI's decision, they maintain they have been unfairly treated.
"Nine days after the decision of the UCI Licence Commission concerning the refusal of 2013 professional licence prolongation, the Russian World Tour team Katusha has received a document containing the reasons of the refusal," a team statement read.
"All the positions mentioned in this document were considered during the UCI Licence Commission preliminary hearing held on the 22nd of November 2012. All the information provided by Katusha by its opinion is complete and corresponds to the requirements of the UCI Licence Commission.
"After receiving the above-mentioned document the Russian team Katusha confirms its determination to defend its rights using all civilized ways in order to receive the World Tour licence, including the already made appeal to Court of Arbitration for Sport."