Create a time-stamped prior art report documenting blockchain-based lab-note authentication methods relevant to pending EPO opposition against EP3847304

Source Documents *

Examination Timeline * Select procedural deadline 9-month opposition window (standard post-grant) 3-month limitation period (late-in-cycle) Extension of opposition period (Rule 79 EPC) Fast-track Art. 115 observations Admissibility stage for subsidiary requests Oral proceedings imminent (< 4 weeks) Preliminary opinion following Rule 161/162 Interlocutory revision appeal scenario

Blockchain Networks to Search * Choose network(s) Ethereum Mainnet (pre-Merge) Bitcoin (OP_RETURN field ≤ 80 bytes) Hyperledger Fabric private/consortium chain EOS public blockchain Tezos on-chain storage Polygon (formerly Matic) Stellar ledger archive Custom university consortium chain

Technical Claim Clusters *

Jurisdictional Scope * Choose applicable standard EPC 2000 electronic evidence requirements USPTO 37 CFR 1.96 admissibility rules CNIPA examination guidelines for electronic records JPO Coding Guidelines (Annex B, 2021) UK CPR 31.32 disclosure requirements German Patent Act §8 technical validity French code de la propriété intellectuelle Global harmonization (TRIPS Art. 62)

Output Format Requirement * Pick formal annex style EPO Opposition Annex 1 (Rule 76(2)(c)) Rule 116(2) reply brief annex format Rule 132 communication reply format Interlocutory appeal grounds annex 1 Preliminary opinion update timeline Oral proceedings skeleton brief annex Rule 161/162 GA prior art table Rule 161 amendment-synchronized annex

Regulatory Scope Notes

Search Date Anchor * Select cutoff date EP3847304 priority date (2017-06-09) PCT international filing date (2018-06-07) US continuation priority date (2019-12-16) EPA section 40(2) date (2020-06-17) Publication date (2020-12-30) Unity objection response cut-off Oral proceedings notice date Divisional partial transfer date