We received the notice reproduced above because of our US registration for LEASON ELLIS.   We are aware of no legal benefit that will arise if the owner of a federal trademark registration has its registration details published in a ‘catalog’ of registrations.   The company actually appears to admit this in its FAQs (third from bottom).  We are also of the view that  “We recommend you to take this registration . . .” and “By paying the indicated amount you accept this offer that will approve the listing ” are grammatically incorrect.