B737-700
Flight Crew Multiengine; Flight Crew Air Transport Pilot (ATP); Flight Crew Instrument
Flight Crew Last 90 Days 334
Situational Awareness
Inflight Event / Encounter Wake Vortex Encounter; Inflight Event / Encounter Loss Of Aircraft Control
Flight Crew Regained Aircraft Control; Flight Crew Requested ATC Assistance / Clarification
Environment - Non Weather Related; Procedure
Climbing through FL350 we encountered significant wake turbulence that caused the autopilot to disengage. We encountered a pitch down attitude and left and right rolls that culminated in a 'Bank Angle' warning before aircraft was stabilized. We queried ATC and were told that there was a B777 ten miles ahead of us that had not previously been called out to us by Oakland Center.  After stabilizing the aircraft and reporting the wake turbulence encounter to Oakland Center; I contacted the cabin crew to make sure that there were no injuries.  I was told that all three Flight Attendants were fine and that the passengers were doing well with no injuries but everyone was very nervous.  The Captain then made a PA explaining what had happened and that seemed to put everyone in the cabin at ease.  I was the Pilot Monitoring and the Captain responded correctly to the unusual attitude caused by the wake turbulence.  Crew coordination was good and we both credit the recent extended envelope training in the simulator that helped us cope with what could have been a much more significant upset event.  I don't believe that there are any procedures or techniques that would have prevented this.  We were ten miles from the heavy B777 and outside a distance that was concerning or would have caused ATC to point the traffic out to us.  Continued extended envelope training; especially in critical areas like high altitude flight [is advisable].  We will continue to make upset recovery safer.
B737-700 F/O reported encountering wake turbulence climbing through FL350 10 miles in trail of a B777 that resulted in a pitch down and left and right rolls.