July 31 (Reuters) - Uber ( UBER ) said it found more

than 100 instances in which passengers who claimed its drivers

sexually assaulted or harassed them offered bogus or doctored

receipts to prove ridership, or did not explain their inability

to provide receipts.

In a Wednesday court filing, Uber ( UBER ) urged U.S. District Judge

Charles Breyer in San Francisco to order 21 plaintiffs with

suspect receipts to justify why their claims should not be

dismissed, and 90 plaintiffs to provide receipts or

"non-boilerplate" reasons for their absence.

At least 11 law firms represent the various plaintiffs,

court papers show. Those firms had no immediate comment or did

not immediately respond to requests for comment on Thursday.

They were not accused of wrongdoing.

Uber ( UBER ) is trying to reduce its liability in nationwide federal

litigation comprising more than 2,450 lawsuits alleging driver

misconduct. It faces several hundred additional lawsuits in San

Francisco Superior Court.

The San Francisco-based company has maintained it should not

be liable for criminal conduct by drivers it connects with

passengers, and that its background checks and disclosures were

sufficient.

On July 8, Breyer dismissed some fraud and liability claims that

were based on ads promoting Uber's ( UBER ) ride-sharing service as a

safe alternative to drunk driving.

In Wednesday's filing, Uber ( UBER ) said some fake receipts appear

to have been generated through third-party websites.

Uber ( UBER ) said some receipts contained math errors or bogus

surcharges, changed female driver names to male names, were

timestamped before rides occurred, had stray marks, or used

formatting that does not match its own.

One plaintiff submitted two receipts for a single ride,

while two plaintiffs submitted different versions of the same

receipt, the company said.

"Nothing is more critical to the integrity of our judicial

system than honesty," Uber ( UBER ) said. "It is difficult to conceive an

act of misconduct graver than the outright fabrication of

evidence that plaintiffs here undertook."

The case is In re Uber Technologies Inc Passenger Sexual

Assault Litigation, U.S. District Court, Northern District of

California, No. 23-03084.