P

Inventor

CHANG HUNG-JEN

TW25 patents
⚠️ This page may combine multiple inventors who share the name “CHANG HUNG-JEN”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.

PROOFPOINT INC

16 patents
US11636161B1Apr 25, 2023

Intelligent clustering systems and methods useful for domain protection

PROOFPOINT INC16 citations85
US11956272B2Apr 9, 2024

Identifying legitimate websites to remove false positives from domain discovery analysis

PROOFPOINT INC1 citations72
US11539745B2Dec 27, 2022

Identifying legitimate websites to remove false positives from domain discovery analysis

PROOFPOINT INC3 citations72
US11973799B2Apr 30, 2024

Domain name processing systems and methods

PROOFPOINT INC2 citations71
US12323462B2Jun 3, 2025

Identifying legitimate websites to remove false positives from domain discovery analysis

PROOFPOINT INC0 citations62
US12242548B2Mar 4, 2025

Data enrichment systems and methods for abbreviated domain name classification

PROOFPOINT INC0 citations62
US12113820B2Oct 8, 2024

Threat actor identification systems and methods

PROOFPOINT INC0 citations62
US12038983B2Jul 16, 2024

Intelligent clustering systems and methods useful for domain protection

PROOFPOINT INC0 citations62
US11868412B1Jan 9, 2024

Data enrichment systems and methods for abbreviated domain name classification

PROOFPOINT INC0 citations62
US11700272B2Jul 11, 2023

Threat actor identification systems and methods

PROOFPOINT INC0 citations62
US11194871B2Dec 7, 2021

Data enrichment systems and methods for abbreviated domain name classification

PROOFPOINT INC0 citations62
US10965701B2Mar 30, 2021

Threat actor identification systems and methods

PROOFPOINT INC1 citations62
US12438911B2Oct 7, 2025

Domain name processing systems and methods

PROOFPOINT INC0 citations61
US12271811B2Apr 8, 2025

Systems and methods for email campaign domain classification

PROOFPOINT INC0 citations51
US12026469B2Jul 2, 2024

Detecting random and/or algorithmically-generated character sequences in domain names

PROOFPOINT INC0 citations51
US11671456B2Jun 6, 2023

Natural language processing systems and methods for automatic reduction of false positives in domain discovery

PROOFPOINT INC0 citations51

CHANG HUNG-JEN

2 patents

TREND MICRO INC

1 patent

ADVANCED SEMICONDUCTOR ENG

1 patent

NETWORK GENERAL TECHNOLOGY

1 patent

LION PENCIL CO LTD

1 patent

UCHIDA YOKO GLOBAL CO LTD

1 patent

MEDIATEK INC

1 patent

ETRON TECHNOLOGY INC

1 patent