Invalidating a patent that has already been granted

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Is this prior art for “Reiki ornament” (US D663234 S1)?

I came across this design patent in Google: "Reiki ornament" (US D663234 S1) And I realized it describes a design that is very similar to this artifact, which is on display at a Tibetan museum. Can ...
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how to check the priority date of the patent?

IF I need to invalidate the patent that is CIP.Taking priority from CIP->CIP->DP->CP->Parent. Thank you in advance.
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How to check the Novality in the Patent ?

When I read Patent ,I don't get novality of that specially with CIP, CP applications Is it by checking Backward Citations and compare with present claims? Thanks in advance.
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Call for Prior Art US Patent 7,888,125 (Theranos) Duke v. Stanford

CALL FOR PRIOR ART. Can you find better art doe this patent that claims novelty based on a comparison of device output with a known constant? U.S. Patent No. 7,888,125 (Theranos) Filed March 24, ...
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How can it work since the torque axis is constrained?

The precession axis is, apparently, in line with the engine input and in the plane of paer, the spin axis is perpendicular to the precession axis. Then the torque axis, in accordance to gyro physics, ...
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How to get a patent invalidated?

Recently while I was writing up a patent, I discovered that another person has written a patent that is so badly and vaguely worded that it could be used to cover my invention. Whereas I offer clear ...