In a statement published by presidential office chief Zbigniew Bogucki, Nawrocki's office said there was no legal way to replace that act with any other form or procedure.
"If persons elected by the Sejm to the office of judge of the Constitutional Tribunal undertake acts other than taking the oath before the President of the Republic of Poland, those actions will have to be assessed as a conscious and open violation of the law", the statement said.
The Sejm elected six new Constitutional Tribunal judges on March 13. Nawrocki has sworn in two of them, Magdalena Bentkowska and Dariusz Szostek. The remaining four - Krystian Markiewicz, Maciej Taborowski, Marcin Dziurda and Anna Korwin-Piotrowska - have invited the president to parliament for the oath.
According to Polish Press Agency (PAP), lower house Speaker Włodzimierz Czarzasty and former tribunal presidents are expected to attend.
Bogucki said the event would "certainly not" take place before the president and called the invitation "absolutely bizarre".
He said the four judges had to take the oath "in the presence of the president", adding: "It may be before columns, before walls. It certainly will not be before the president".
Presidential spokesman Rafał Leśkiewicz said the planned ceremony would not be a valid oath-taking and "has no legal force". He added it "may constitute an offense" and cited a criminal code provision on abuse of power by a public official.
Leśkiewicz said the presidential office had not ruled out inviting the four judges at a later date, but that analyses were still underway regarding the vacancies to which they were elected and whether they had shown political preferences.
The four judges wrote to the presidential office that they had a duty to begin serving without delay and had twice asked for a date to take the oath at the presidential palace. "In the absence of any response from the President's Office", each invited the president to parliament, they said.
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Source: Polish Radio, PAP