Writing instruments; Ink for writing instruments; Pouches for writing instruments; Writing implements; One-finger writing instruments; Nibs for writing instruments; Inks for writing instruments; Ink cartridges for writing instruments; Nibs of gold for writing instruments; Wristbands for the retention of writing instruments; Pens; Marking pens; Felt pens; Fibertip pens; Rollerball pens; Fountain pens; Artists' pens; Bubble pens; Ballpoint pens; Highlighting pens; Ball-point pens; Ball pens; Co...