LOT is demanding compensation of at least PLN 1 billion (EUR 220 million, USD 250 million), according to the Polish state news agency.
The lawsuit, filed in a court in Seattle, was preceded by months of negotiations that failed to produce a settlement, PAP reported.
It cited LOT's spokesman Krzysztof Moczulski as confirming the report on Monday.
737 MAX aircraft were grounded worldwide in 2019 following two deadly crashes, the Reuters news agency reported.
(gs)
Source: PAP, Reuters