Oh dear. Having started out as Silicon Valley startups or back-of-a-shed Asian operations, the biggest tech companies are now some of the largest companies in the world. But they still sometimes act like kids.

Mobile phone manufacturers are particularly prone to suing each other, so much so that Gizmodo had to make a special chart to keep track of it all. Most recently, Motorola sued Apple, claiming the iPhone manufacturer had violated 18 of its patents concerning 'wireless communication technologies, such as WCDMA (3G), GPRS, 802.11 and antenna design, and key smartphone technologies including wireless email, proximity sensing, software application management, location-based services and multi-device synchronization.' In other words, pretty much all the nifty stuff the iPhone does.

Now, deliciously, Apple has sued them right back, claiming that Motorola's recent Android phones infringe Apple's patents on multi-touch technology. Some of the patents Apple's claiming have also got Nokia and HTC into trouble.

Where will it all end? We'd like to see it settled by Steve Jobs wrestling the other relevant CEOs in some sort of death match.

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