"Interserve, Inc. doing business as TechCrunch" - the phrase "doing business as" (aka "dba") is a legal term, technically known as an assumed name. This means

"Interserve, Inc. doing business as TechCrunch" - the phrase "doing business as" (aka "dba") is a legal term, technically known as an assumed name. This means TechCrunch is Interserve and thus owns the trademark.