Valtrus: US-7904686-B2 (Data Security for Use with a File System)
FinishedSponsor: Cloud Native Computing Foundation (CNCF)
7904686 - Data Security for Use with a File System
Prize: $3000
Ended 3 days ago
This contest is co-sponsored by Cloud Native Computing Foundation (CNCF) and is part of the CNCF Cloud Native Heroes Challenge: https://www.cncf.io/heroes
All qualified participants will receive a free CNCF “Cloud Native Hero” t-shirt, available for pickup at any future KubeCon+CloudNativeCon conference. In addition, each participant can choose between (a) a free 6-month subscription to Linux Foundation Education e-learning catalog or (b) a $45 gift certificate to the CNCF online store (shipping not included).
In addition to the $3,000 cash prize, the winner may select any one of the following additional prizes: (a) a complimentary ticket to attend any KubeCon+CloudNativeCon in the next 12 months, (b) a free 1-year subscription to Linux Foundation Education e-learning catalog plus one free professional certification exam, or (c) a $150 gift certificate to the CNCF online store plus free shipping.
AI-Assisted Claim Charting
Participants are required to use the Pearl claim charting tool to generate submissions. Each participant can claim 30 free charts for patent 7904686.
Participants are required to use the Pearl claim charting tool to generate submissions. Each participant can claim 30 free charts for patent 7904686.

Overview
Rules
Known References
Unified is seeking prior art on at least claim 1 of US-7904686-B2. The patent is owned by Valtrus Innovations Ltd.
This patent describes a method and apparatus for enhancing data security within a file system. The invention addresses shortcomings in existing data security by offering an alternative to traditional encryption-decryption methods and online licensing checks, which can be time-consuming, confusing, or insufficient for preventing unauthorized file reconstruction. The patent has been asserted against The Home Depot, NetApp, and FedEx. For more information on the patent:
https://portal.unifiedpatents.com/patents/patent/US-7904686-B2
View the Similar Documents (patents + scholarly publications) generated by Google Patents:
Patents: https://patents.google.com/?q=(~patent%2fUS7904686B2)&before=filing:20070730
NPL: https://patents.google.com/?q=(~patent%2fUS7904686B2)&before=filing:20070730&patents=false&scholar
** PLEASE READ THE RULES FOR THIS CONTEST BEFORE YOU DECIDE TO PARTICIPATE. **
** TO QUALIFY FOR CONSIDERATION, A CLAIM CHART IS REQUIRED. **
** PRIOR ART THAT HAS BEEN PREVIOUSLY CITED DURING PROSECUTION WILL NOT BE CONSIDERED. **
PATROLL researchers are required to use Pearl to generate claim charts. Submitted invalidity charts must address every limitation of the challenged claim. This may require using more than one prior art reference. PATROLL researchers are required to use Pearl to initially generate claim charts, and then researchers must add relevant figures and highlighting before submitting each chart. Each PATROLL researcher can generate up to 30 invalidity claim charts per month using Pearl. These charts can be downloaded then submitted to PATROLL.
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Start Date: Thu Oct 09 2025 05:00:00 GMT+0000 (Coordinated Universal Time)
End Date: Tue Dec 02 2025 05:59:59 GMT+0000 (Coordinated Universal Time)
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