Apple what you did was lie...and lying about somebody is a very bad thing to do. Now I want you to go over to Samsung's house and apoligize. After you get done with that, I want you to go to everyone's house in the neighborhood and knock on their door and tell them that Apple did not steal your idea...MARCH, MISTER!
In cases like this the companies are literally making claims about what other companies have done. This damages the image of the other companies, and if it's found to not be true in court, most people who have seen the public accusations won't know about it.
You know, like when people are accused of pedophilia. Anybody else remember this thread?
http://gbatemp.net/topic/328801-child-pornography-case-that-caused-3ds-doa-sale-ban-finally-over/
Guy goes to court for "child porn". Turns out he's a professional translator for many anime series. Also only one image out of the group is determined to be pornographic, it's hentai, and the court acquits him, refusing to charge him criminally for one hentai image.
Yet in the thread you can see tons of people insulting the guy and talking about how it makes them sick.
Why? Simply because
he was being accused of the crime.
The average person doesn't know what the justice system in most countries is about. You tell them somebody (they don't know) is being accused of something, and they think the person's guilty, not realizing that the entire point of the court case is to determine if they are or not.
An accusation is a damn powerful thing, and the courts know it. Hell, lying in a court of law can get you up to five years in jail in the US, the court systems of other countries don't buy that shit either.
Apple needs to do this for two reasons.
1 - To officially retract their claims and help heal some of the damage to Samsung's image that they directly caused.
2 - To hopefully get Apple to not pull this shit in the future.
^ - Think that kid's going to be quick to lie to her dad next time, or do you think public embarrassment is going to take a step towards mending her ways?