Patent ID: 7923704

Claim:
A charged particle beam writing method comprising: writing a pattern on a first target object by using a charged particle beam in a writing apparatus; conveying a second target object after having written the pattern on the first target object, wherein even though the second target object is arranged on any one of conveying paths including a carry-out port and a carry-in port of the writing apparatus, a conveying operation for the second target object is not performed during writing the pattern on the first target object; determining the presence/absence of a request of a conveying operation of the second target object, wherein a pattern writing operation for the first target object is stopped by the request; and determining whether a stop time of the pattern writing operation of the first target object occurred by performing the conveying operation of the second target object is included in a pattern writing prediction time of the first target object, wherein when the stop time of the pattern writing operation is not included in the pattern writing prediction time, the conveying operation of the second target object is not performed, and the pattern is written on the first target object.