An east Texas attorney has sued a German glider aircraft manufacturer for over $600,000 in a fee dispute filed in federal court on Monday.

Joseph C. Blanks P.C. alleged in the lawsuit that Stemme AG breached its contract with the firm when new leadership took over the company and quit paying his legal bills. Solo practitioner Joseph Blanks of Doucette, Texas, works at the firm, according to State Bar of Texas records.