# When does the Apple MagSafe patent run out? **URL:** \ **Category:** Factual Questions\ **Created:** [August 13, 2014, 11:56pm UTC](https://boards.straightdope.com/t/when-does-the-apple-magsafe-patent-run-out/695475 "2014-08-13T23:56:51Z")\ **Posts on this page:** 10\ **Page:** 2
**Author:** ![pulykamell](https://sea3.discourse-cdn.com/straightdope/user_avatar/boards.straightdope.com/pulykamell/32/3166_2.png) [@pulykamell](https://boards.straightdope.com/u/pulykamell)\ **Post date:** [August 15, 2014, 4:26am UTC](https://boards.straightdope.com/t/when-does-the-apple-magsafe-patent-run-out/695475/21 "2014-08-15T04:26:13Z")
> [@TimeWinder](#): > > I’ve had a large number of Mac laptops with these connectors (there are at least three different styles) and never had a power supply go bad because of fraying, arcing, or other strain relief problems. I haven’t had a problem recently with the connectors, but with the first generation of MacBook Pros – I want to say circa 2006 – I had three different chargers go on me because the connector wore out (never had the L-shaped connector, just the straight one.) It would eventually simply not recharge, but it would actually supply power to the computer. Sometimes if I flipped the connector it would work, but eventually all three chargers required replacements, and the replacements lasted about a year before needing to be replaced again. Currently, though, I have not had any problems. Maybe four years ago was the last time I changed a MacBook Pro charger. But it certainly was an issue with me before then. ---
**Author:** ![dtilque](https://avatars.discourse-cdn.com/v4/letter/d/d6d6ee/32.png) [@dtilque](https://boards.straightdope.com/u/dtilque)\ **Post date:** [August 15, 2014, 6:29am UTC](https://boards.straightdope.com/t/when-does-the-apple-magsafe-patent-run-out/695475/22 "2014-08-15T06:29:03Z")
Why don’t those who want to get around Apple’s patent just design a similar connector with a different number of pins? ---
**Author:** ![Francis\_Vaughan](https://sea3.discourse-cdn.com/straightdope/user_avatar/boards.straightdope.com/francis_vaughan/32/3093_2.png) [@Francis\_Vaughan](https://boards.straightdope.com/u/Francis_Vaughan)\ **Post date:** [August 15, 2014, 7:23am UTC](https://boards.straightdope.com/t/when-does-the-apple-magsafe-patent-run-out/695475/23 "2014-08-15T07:23:46Z")
> [@](#): > > 1. The magnetic connector system of claim 34 wherein, when the first connector couples to the second connector, the first and second plurality of electrical contacts define a corresponding plurality of electrical communication paths. > 2. The magnetic connector system of claim 38 wherein the plurality of electrical communication paths comprises at least one electrical power path and at least one signal path. Patent covers different numbers of pins. What it contributes is the ability to work either way up, and the combination of signals and power. ---
**Author:** ![yoyodyne](https://avatars.discourse-cdn.com/v4/letter/y/a9a28c/32.png) [@yoyodyne](https://boards.straightdope.com/u/yoyodyne)\ **Post date:** [August 15, 2014, 2:19pm UTC](https://boards.straightdope.com/t/when-does-the-apple-magsafe-patent-run-out/695475/24 "2014-08-15T14:19:47Z")
> [@dtilque](#): > > Why don’t those who want to get around Apple’s patent just design a similar connector with a different number of pins? I have a charging cable from [these people](http://magnector.com/) for my tablet. I don’t know how that relates to the Apple patent. ---
**Author:** ![scr4](https://avatars.discourse-cdn.com/v4/letter/s/59ef9b/32.png) [@scr4](https://boards.straightdope.com/u/scr4)\ **Post date:** [August 15, 2014, 2:29pm UTC](https://boards.straightdope.com/t/when-does-the-apple-magsafe-patent-run-out/695475/25 "2014-08-15T14:29:27Z")
> [@seodoa](#): > > I could see something like the MagSafe being useful in that situation, although still not worth 80 dollars for a replacement if they are as problematic as reviews suggest. $80 is the cost of an Apple AC adapter equipped with MagSafe. That’s not unusually high for an OEM laptop AC adapter, even with a conventional connector. ---
**Author:** ![Francis\_Vaughan](https://sea3.discourse-cdn.com/straightdope/user_avatar/boards.straightdope.com/francis_vaughan/32/3093_2.png) [@Francis\_Vaughan](https://boards.straightdope.com/u/Francis_Vaughan)\ **Post date:** [August 16, 2014, 9:17am UTC](https://boards.straightdope.com/t/when-does-the-apple-magsafe-patent-run-out/695475/26 "2014-08-16T09:17:04Z")
It is however sadly also the price for a replacement connector, as that is the only way you can buy one. I have bought two so far. Thus I have two perfectly functioning AC adaptors with failed Magsafe plugs, rendering them useless. I would never contemplate a machine other than a Mac, so I put up with it. But it is very annoying. ---
**Author:** ![Francis\_Vaughan](https://sea3.discourse-cdn.com/straightdope/user_avatar/boards.straightdope.com/francis_vaughan/32/3093_2.png) [@Francis\_Vaughan](https://boards.straightdope.com/u/Francis_Vaughan)\ **Post date:** [August 16, 2014, 9:19am UTC](https://boards.straightdope.com/t/when-does-the-apple-magsafe-patent-run-out/695475/27 "2014-08-16T09:19:01Z")
> [@yoyodyne](#): > > I have a charging cable from [these people](http://magnector.com/) for my tablet. I don’t know how that relates to the Apple patent. Very hard to see how this does not run afoul of Apple’s patent. About the only thing that might save them is that it forms part of a protective case, and not part of the phone or tablet proper. ---
**Author:** ![AaronX](https://avatars.discourse-cdn.com/v4/letter/a/7bcc69/32.png) [@AaronX](https://boards.straightdope.com/u/AaronX)\ **Post date:** [August 16, 2014, 3:19pm UTC](https://boards.straightdope.com/t/when-does-the-apple-magsafe-patent-run-out/695475/28 "2014-08-16T15:19:12Z")
I wonder if the patent covers more than just magnetic attachment. MagSafe has several other features: reversible connector, authentication before increasing voltage, and indicator light on the connector. Hmm, I wonder if people can sell MagSafe to normal DC plug converters? Take Apple adapters just for the MagSafe plugs, beef up the wire, add some circuitry for it to work, then end it in a normal DC plug. It’ll still be detachable, and any fraying would occur in the cheap adapter’s wire. Some companies are already buying Apple adapters just for the MagSafe plug. ---
**Author:** ![AaronX](https://avatars.discourse-cdn.com/v4/letter/a/7bcc69/32.png) [@AaronX](https://boards.straightdope.com/u/AaronX)\ **Post date:** [August 16, 2014, 3:21pm UTC](https://boards.straightdope.com/t/when-does-the-apple-magsafe-patent-run-out/695475/29 "2014-08-16T15:21:37Z")
Oh how about inductive charging? Or does that produce too much interference? ---
**Author:** ![Silophant](https://avatars.discourse-cdn.com/v4/letter/s/a698b9/32.png) [@Silophant](https://boards.straightdope.com/u/Silophant)\ **Post date:** [August 16, 2014, 3:32pm UTC](https://boards.straightdope.com/t/when-does-the-apple-magsafe-patent-run-out/695475/30 "2014-08-16T15:32:40Z")
> [@TimeWinder](#): > > Both my deep fryer and my Microsoft Surface tablet have magnetic connectors, too, so I doubt that the patent is really holding anybody back. AFAIK, the patent is only for computers, and Microsoft and Apple have an agreement where they share patents (since Windows and OSX probably infringe on scores of the others patents). So, Microsoft can use a magnetic connector on the few computers they make themselves, but none of the other manufacturers can. [Previous page](https://boards.straightdope.com/t/when-does-the-apple-magsafe-patent-run-out/695475.md?page=1)