Trademarks can be made, but they cannot be used on Category 5 "medical sanitary preparations", "disinfectants", "fungicides" and other items.

Because I think the three words "Athlete's Foot" you want to register must be used for drugs that treat athlete's foot. The three words "Athlete's Foot" contain common names for drugs that treat athlete's foot.

Just like the words "cold medicine" cannot be used for medicines to treat colds.