consort and litigant
The confidential subject matter in this case was the information concerning a set of etchings which the young Queen Victoria and her artistically-inclined husband Prince Albert had executed over a period of years. In the course of conducting this research this Kat had to gain permission to view the etchings, which are held in Windsor Castle. More revealing than the etchings themselves, or the reasoning of the court, was the fact that investigative and intrusive news reporting was capable of causing annoyance and distress to a journalist's royal quarry in the mid-19th century just as it is today.
The article, "Prince Albert and the Etchings", was originally published in  12 European Intellectual Property Review 344 to 349. You can read it in full here.
For "Past historic 1: how patents for invention came from Venice to England", click here