You can. Unless and until it maligns or defame them. It is better to get the approval from the authorities concerned, for we won t face any problem, at the time of publication or after the release of the novel.mmmmm......Which country are you from? May be it differ in your country.
Generally, it is not a good idea to use real company names. You very well may have no problem from the company, but if they do complain, you may have to pull all the books off the market or get sued.Universities are a little different, but whether you could use their name depends on the situation, how you portray the school and so forth.
