PALO ALTO, California (AFP) ― Silicon Valley nobility paid tribute to revered Apple co-founder Steve Jobs on Sunday at a private memorial service held under tight security at Stanford University.

Security teams from Apple and Stanford along with local police officers cordoned off the main quad on campus, only granting access to those with invitations to the private event.

Guests were directed to the university chapel for the service. Candles lined a path leading from the church to a museum, where a soiree in honor of the man behind iPhones, iPods, iPads, and Macintosh computers was to be held later on.

Chauffeur-driven black cars and sports-utility vehicles, some with government plates, parked close to the chapel entrance as guards shooed away inquisitive passersby and people snapping pictures of attendees.

Some guests were ushered in through a heavily patrolled rear entrance to the small Romanesque and Byzantine style church at the center of campus which has survived two major earthquakes.

The church is able to hold more than 1,000 people.

The list of those invited to the memorial for Jobs ― who died on Oct. 5 at age 56 ― was rumored to include former U.S. vice president Al Gore, who is a member of the Apple board, and founders of several top Internet firms.

The heir apparent of South Korea’s Samsung Group was to attend the service despite an ongoing legal battle with Apple, an industry source who declined to be named told AFP on Sunday.

Lee Jae-yong, the only son of chairman Lee Kun-hee and chief operating officer of Samsung Electronics, was attending in response to an invitation from Apple CEO Tim Cook, the source said.

While Apple was heavily managing the scene on Sunday, responses to invitations were directed to the Emerson Collective, a philanthropic organization founded by the Apple co-founder’s wife, Laurene Powell Jobs.

The soiree in memory of Jobs at the Stanford museum following the service was expected to last late into the night.

California Governor Jerry Brown declared Sunday as “Steve Jobs Day” in the western U.S. state, saying he had “embodied the California dream.”

“To call him influential would be an understatement. ... His innovations transformed an industry, and the products he conceived and shepherded to market have changed the way the entire world communicates,” Brown said in a statement.

Jobs was buried in a private ceremony at a non-denominational cemetery three days after his death.

The Apple co-founder was also to be honored during an Oct. 19 memorial for firm employees at the company’s headquarters in Cupertino, California.

Apple has not indicated plans for a public memorial for Jobs, but people have paid tribute to him with flowers, candles, messages and more outside his home, the company headquarters and Apple retail stores around the world.

Jobs was a “uniquely Californian visionary. He epitomized the spirit of a state that an eager world watches to see what will come next,” Brown said in his proclamation.