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The U.S patent and trademark office has rejected claims of Rambus company over infringing intellectual property by companies that utilize technologies like DDR and other. In particular, the U.S. government abandoned so-called Barth patents that Rambus got as a result of an acquisition.

The Barth family of three patents include DDR, DDR2, DDR3, mobile DDR, LPDDR, LPDDR2 and GDDR3 memory controllers. An appeals board at the U.S. Patent and Trademark Office declared the patent invalid on January 24, according to a ruling posted on their website. The previous two were declared invalid in September, according to Reuters news-agency.

Rambus has already lost a case against memory manufacturers Hynix Semiconductor and Micron. Invalidation of Barth family of patents is more than a bad news for Rambus as now it will be unable to sue companies that manufacture or develop dynamic random access memory (DRAM) or develop memory controllers.

Rambus can appeal the latest decision from the PTO. "We're evaluating our options," said the company spokeswoman Linda Ashmore.

Tags: Rambus, DDR, Micron, DDR2, Hynix, LPDDR

Discussion

Comments currently: 6
Discussion started: 01/28/12 11:55:48 AM
Latest comment: 01/29/12 06:59:51 PM

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1. 
Finally RAMBUS has lost the illegal patents they had attained thru corruption and fraud.
4 0 [Posted by: beenthere  | Date: 01/28/12 11:55:48 AM]
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2. 
RAMBUS is the worst fraud company i have ever heard of........
They live by getting money through illegal patents. I think they don't even know to manufacture a PC100 SDRAM. Fckrsss
1 0 [Posted by: tks  | Date: 01/29/12 02:54:41 AM]
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3. 
They are most definitely unscrupulous...
0 0 [Posted by: beenthere  | Date: 01/29/12 11:17:39 AM]
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4. 
That's maybe the reason why DDR1 so expensive even these days, coz of this RAMBUS. Hoping they will obliterate soon.
0 0 [Posted by: pogsnet  | Date: 01/29/12 02:35:41 PM]
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5. 
Well all the hate to rambus may be due as they did obtain patents steathily. However lets see how many of you are after google since their purchase of motorola mobility (same way of obtaining patents) to attempt to avoid the very real legal troubles they should be punished for with android.
0 0 [Posted by: gelde3001  | Date: 01/29/12 06:51:58 PM]
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6. 
RAMBUS helped define DDR and then went and filed for patents on it which is fraud. Thats' why their DDR patents are being stripped.
0 0 [Posted by: beenthere  | Date: 01/29/12 06:59:51 PM]
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