Hi,
There is no right and wrong answer on your question.
I would definitely recommended to use brand name in meta tittles for brand recognition. If potential visitors start seeing your brand name in search results, than see it somewhere across social networks or PPC ads, there is high possibility for them to remember your brand and eventually click to see what is it all about.
Ofcourse you should concentrate more on relevant keywords, but if you have enough space i don't see a reason not to include it on the end of a string. If your brand is well known or stand for quality, than including the brand name in meta tittle adds value to your search snippet. But, if it is not well known, you are on a good track for it to become well known
f.x Black leather jackets for woman | Brand Name
Regards,
Dusan
- meaning if you sell pencils and your brand name is XYZ