Apple stands accused of patent infringement by integrated mail- and document-management solutions firm Pitney Bowes.

Apple is being sued for violating the company's variable-dot printing patent. The "272 patent" enhances the resolution of laser-jet printing. The company claims that the technology predates Apple's LaserWriter printer series, which makes use of the technology. There's also the suggestion that other Apple products may have infringed the patent.

Several other companies are included in the lawsuit, including Lexmark, Matsushita, Panasonic, NEC, Samsung, and Xerox.

The company won a $400 million settlement from Hewlett-Packard over the same issue on June 4 this year.

Pitney Bowes filed the suit against Apple on June 18 in the US District Court for the District of Connecticut. Apple has declined to comment.