I came across this site with some useful patent tools including Patent Term Estimator. One of their interesting tool is the USPTO widget, this online tool searches various USPTO databases to display bibliographic details, publication full text, patent full text, assignment details, and maintenance fees in one easy to use interface.

To know more please visit http://www.maxval-ip.com/free-patent-tools.html

Also, their daily IP litigation alerts listing the patents and products is worth mentioning (Click here to view a sample).

As a limited time offer (this month only) for ipInsiders MaxVal is offering a free 1 year subscription to their daily IP Litigation alerts, please click on this link to subscribe.

MaxVal's Litigation databank:

• IP Litigation DB contains almost all the cases related to patents since 1980 (including CAFC and ITC cases)
• The cases are updated every day from different sources (including court ECFs and PACER)
• In addition to the details of the cases, complaints and docket report (as filed) are also incorporated to the database
• Users will have access to the details or attachment based on the privileges
• Stay current on patent litigation details that are of interest to you
• Follow prosecution activities and Follow arguments in cases of interest, effortlessly