Prior art

The most relevant prior art for US patent 10,134,398 is Rosenberger.

The U.S. Court of Appeals for the Federal Circuit (CAFC) recently reversed and remanded two Patent Trial and Appeal Board (PTAB) decisions that had found Google's patents for hotword detection, including US10134398, unpatentable. Google successfully argued on appeal that the PTAB erred in concluding that the prior art reference Rosenberger disclosed devices exchanging weighted signals while in a low power mode. The CAFC found that the Board's conclusion was not supported by substantial evidence and that Rosenberger "cannot anticipate the claims because 'it fails to disclose the limitations directed to exchanging messages while in a low power mode.'"

Therefore, a detailed analysis of Rosenberger in relation to the claims of US10134398, particularly regarding the "low power mode" limitation, would be crucial for understanding the most relevant prior art.

To provide the full citation, publication/filing date, a brief description, and which claims it potentially anticipates for Rosenberger, I would need to access the USPTO database for the specific patent number 10,134,398 and review its cited references. Since direct access to the USPTO database is not available in this environment, I cannot provide this specific information.

In general, patent examiners and applicants identify relevant prior art through various means, including examiner searches and Information Disclosure Statements (IDS) filed by applicants. The most relevant prior art would typically be those references that the examiner, applicant, or in this case, the PTAB and CAFC, considered most pertinent to the patentability of the claims. Given the recent Federal Circuit decision, Rosenberger stands out as a key prior art reference for US10134398.