Bayer on Tuesday said it won a trial in a lawsuit brought by a retired postal service worker in Pennsylvania who alleged he developed non-Hodgkins lymphoma from using the company's Roundup weedkiller.

Company has won 13 of last 20 cases; plaintiffs have won more than $4 billion
Decision important in ongoing lawsuits, Bayer says
Company blocked from advertising product as non-toxic
Decision doesn't prohibit Roundup's use
Company provides heads-up on 'force majeure event'
Plaintiff's settlement demands unreasonable, company said