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William L. Siegel
William L. Siegel is a lawyer in Dallas, TX who works for Cowles & Thompson, P.C.. Practice areas include Bankruptcy, Business, Creditor-Debtor. Court admissions include Fifth Circuit Court of Appeals, Texas Eastern Bankruptcy Court. Licensed in Texas since 1982. Graduated from University of Toledo in 1982.
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William L. Siegel
Cowles & Thompson, P.C.Dallas, TX·43 years licensed
Claim profileContact attorney
William L. Siegel is a lawyer in Dallas, TX who works for Cowles & Thompson, P.C.. Practice areas include Bankruptcy, Business, Creditor-Debtor. Court admissions include Fifth Circuit Court of Appeals, Texas Eastern Bankruptcy Court. Licensed in Texas since 1982. Graduated from University of Toledo in 1982.
Law school
University of Toledo
Class of 1982
Bar admission
1982
State Bar of TX · #18342480
Office
901 Main St Ste 3900
Dallas, TX 75202
Disciplinary
None on record
Clean since admission
Case data
Case data
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Practice, courts & credentials
Practice areas4 listed
BankruptcyBusinessCreditor-DebtorLitigation: Commercial
Courts admitted6 total
Fifth Circuit Court of Appeals
Texas Eastern Bankruptcy Court
Texas Eastern District Court
Texas Northern Bankruptcy Court
Texas Northern District Court
Texas Western Bankruptcy Court
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Last refreshed Jun 2026