Ciao,
navigando sul web mi pare di capire che si tratti di una garanzia limitata che copre anche i danni da scheggiatura del prodotto.
altro esempio da web con spiegazione:
3 Year No-Chip Warranty: The dinner plate, salad plate, bowl and mug of this fine quality Oneida dinnerware (Four Piece Place Setting) are warranted against edge chipping for 3 years from date of the original purchase. If any piece fails to conform to this warranty, return the piece, with proof of purchase, to The Oneida Group at the address below. The Oneida Group will, at it's option, replace the affected piece only (not for a complete set) in the same style or a similar style if the original style is not available at no charge. This warranty does not cover any damage or defects caused by misuse, abuse or failure to use proper care in accordance with the instructions provided.

This warranty gives you specific legal rights and you may also have other rights which vary from state to state.