stress - How can I predict the stressed syllable in proper/brand/trademark/foreign nouns?

I often encounter nouns that I hear of for the first time, and I can not determine which syllable to stress. Unfortunately, I can not find most of these nouns in dictionaries to check the stressed syllable. These nouns are most often proper nouns, brand names (food, drugs..), trademarks, names of foreign places, cities, rivers, people,... etc.

How can native speakers predict the stress position in such nouns (names they hear of for the first time)? What would you advise me to get the stress right in such words?