Joe Jackson's birthday is Friday and the musical clan is hosting about 1,000 people at the Estrel hotel for a party in his honor.
"I hope that Michael will come to Berlin. We have a lot of fans in Europe," the elder Jackson said.
Jackson siblings Jermaine, Janet and LaToya will all attend the bash and a hotel spokeswoman said she was "70 percent sure" Michael would be there, too.
Michael Jackson has not made a public appearance since being acquitted of sexually molesting a teenage boy in California last month.