Supreme Court of Colorado
CenturyLink, Inc.; Glen F. Post, III; R. Stewart Ewing, Jr.; David D. Cole; William A. Owens; Martha H. Bejar…
April 6, 20262026 CO 20
Summary
The court held that an attorney satisfies C.R.C.P. 11(a) only by conducting a sufficient, objectively reasonable investigation supporting the complaint's allegations, including allegations pleaded on information and belief. Whether copying allegations from related lawsuits violates that duty is fact dependent, and copying alone does not establish a violation or require counsel to personally interview the underlying witnesses. Applying that rule, the court concluded that Houser's counsel's review of related filings, investigations, public materials, and customer affidavits was sufficient and affirmed the court of appeals.