Patent Challenged:

9048988

Description:

Unified Patents is seeking prior art on at least claim 1 of US 9,048,988. This patent is owned by Redwood Technologies, a Dominion Harbor Enterprises subsidiary, a NPE. The '988 generally relates to Multiple-Input and Multiple-Output (MIMO)-Orthogonal Frequency Division Multiplexing (OFDM) communication is provided which allows high accuracy estimation of frequency offset, high accuracy estimation of a transmission path fluctuation and high accuracy synchronization/signal detection. Pilot symbol mapping is provided for forming pilot carriers by assigning orthogonal sequences to corresponding subcarriers among OFDM signals which are transmitted at the same time from respective antennas in the time domain. Even when pilot symbols are multiplexed among a plurality of channels (antennas), this allows frequency offset/phase noise to be estimated with high accuracy. Traindex is a machine learning enabled search service. They have provided an ordered list of most semantically similar patent documents. The results are filtered to include only results with the publication date preceding that of the patent being challenged. The link can be found here: https://www.traindex.io/prior-art/US-9048988-B2 Techson IP has provided its Full validity-focused Limestone|Report https://www.limestonereport.com/ which includes: a list of highly relevant prior art patent leads - individually ranked to the claims and tiered by research efficiency; summary predictive analytics about the search; a full CPC technology profile. Interested professionals may take them and craft work products from there. The Full Report link is here: https://s3.amazonaws.com/report.limestoneip.com/bliczAiWjHWNsUNFvoyuL9.full.html IPscreener shows an AI generated list of relevant prior art also helping Patroll searchers to faster read and understand of documents found by highlighting relevant passages. Access is free for the exploring the contest case, to view, comment and export identified texts. The link can be found here: https://my.ipscreener.com/#doc_33537 Ambercite has provided a list of similar prior art patents based on its citation-based algorithms, predicting similarity. This list is provided in an easy-to-use interface, and known citations have been hidden from the results. A free trial is available to run your own searches. The link can be found here: https://www.amberscope.com/ambercite-ai.html?share=43GqYUCoC56C5oKyCjKZKW View the Similar Documents (patents + scholarly publications) generated by Google Patents: Patents: https://patents.google.com/?q=~patent%2fUS9048988B2&before=filing:20050824 NPL: https://patents.google.com/?q=~patent%2fUS90489882&before=filing:20050824&patents=false&scholar ** PLEASE READ THE RULES FOR THIS CONTEST BEFORE YOU DECIDE TO PARTICIPATE. ** ** TO QUALIFY FOR CONSIDERATION, A CLAIM CHART IS REQUIRED. ** ** PLEASE USE THE PROVIDED CLAIM CHART AS A TEMPLATE ** ** PRIOR ART THAT HAS BEEN PREVIOUSLY CITED DURING PROSECUTION WILL NOT BE CONSIDERED. **

Start Date: Fri Jan 28 2022 16:30:12 GMT+0000 (Coordinated Universal Time)

End Date: Tue May 31 2022 15:30:12 GMT+0000 (Coordinated Universal Time)

Attachment:

Unified Patents Claim Chart Template.docx

US9048988.pdf

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