Mostly we hear about mobile phone patent wars, but today is special. It's the anniversary of telephone patent disputes.
On February 14, 1876, Alexander Graham Bell filed a US patent application for his telephone. On that same day, Elisha Gray filed a "patent caveat" for his telephone.
In 1876 a patent caveat was a preliminary document not unlike today provisional patent application. The point is they both went on record the same day and that was the start of a long patent dispute.
So today is the 136th anniversay of the start of the unfortunate (or beautiful, depending on your point of view) lasting relationship between telephony and patent lawyers.