Rajshahi Regional Election Officer and Sub-Election Returning Officer Md Moin Uddin Khan declared him as MP unopposed on Sunday.
The Natore-4 (Gurdaspur-Baraigram) constituency fell vacant following the death of valiant Freedom Fighter and lawmaker Professor Abdul Quddus on August 30 last.
Later, Awami League (AL) picked Patwari for contesting Natore-4 by polls.
District Jatiya Party president Alauddin Mridha and Chhatra Dal leader Mehedi Hasan Noman collected nomination papers for this seat but none of them submitted their nomination papers on September 17, the last day of the submission date.
The by-election was scheduled to be held on October 11.