There are so many features I use every day. The IDS feature that downloads the information, fills out the form, and downloads foreign patent references is a time saver. The batch downloading of PAIR documents is very convenient to get all the office actions, etc. each day. I also use the antecedent basis and part number checking. The claims compare feature and claim renumber feature are great to be sure the issued patent is correct. Populating USPTO forms prevents errors. Review collected by and hosted on G2.com.
I haven't run into any things that I dislike. They periodically send updates which fix issues usually caused by changes at the USPTO. I wish it would allow 2 users per subscription so my paralegal can do some of the tasks without me having to buy her own subscription. Review collected by and hosted on G2.com.