Plains Angels will hold a session on intellectual property on March 28.

Speakers from BrownWinick law firm will speak on what angel investors should know about patents, trademarks and intellectual property as it has to do with raising capital and valuation for startup companies.

The session will take place from 8 to 10:30 a.m. at the Greater Des Moines Partnership, 700 Locust St. Registration is $15, and can be done here.