The jury's decision follows a four-week trial in which Reston, Va.-based ICO accused the aerospace giant of hindering the launch of its satellite network by fraudulently raising prices for the project.
Boeing "was extremely hurtful and harmful to the company and almost destroyed ICO," said ICO attorney Barry W. Lee.
Boeing spokeswoman Diana Ball said the company will appeal the case, citing "fundamental flaws throughout this trial." She said the process could take several years.
ICO's lawsuit, filed in 2004 in Los Angeles County Superior Court, stems from the company's decade-old plan to launch a fleet of satellites that would broadcast video and other services to mobile device users around the world.
ICO contracted with El Segundo-based Hughes Electronics Corp. in the mid-1990s to build and launch 12 satellites. Boeing acquired Hughes in 2000 and inherited the ICO contract, but only finished two satellites -- one of which was lost because of a failure aboard a Boeing Sea Launch rocket.
ICO sued Boeing and its satellite division four years later over breach of contract after Boeing allegedly demanded ICO pay another $400 million to finish the job.
Ball said costs of producing the satellites increased as ICO tried to delay the project during a major slump in the telecommunications sector.
ICO attorneys argued during trial that once Boeing got into the satellite communications business, its former customer became a competitor. Boeing's attorneys argued the aerospace company attempted to keep the deal alive and accused ICO of canceling the contract for convenience.
The jury found Boeing acted with fraud and malice and awarded ICO $59 million from Boeing Satellite Systems, which is based in El Segundo, and $178 million from the Chicago-based parent company.
The judge will determine whether $91.6 million in compensatory damages related to a separate contract with the parent company is already included in the $371 million award or should be added to the total.
ICO, which McCaw and other investors rescued from bankruptcy in 2000, has said the money from Boeing will help pay for its international expansion plans and to put its 10 warehoused satellites into space.