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For the Inventor, By the Inventor

Palo Alto, CA, United States of America

Lien-Fei Chen

This inventor holds 23 USPTO granted patents and 107 published patent applications, plus 1 CIPO patent, primarily in Video Compression. Top assignee: Tencent America LLC. Active years: 2025-2026.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Lien-Fei Chen. Retrieved from https://idiyas.com/inventor/lien-fei-chen-o3ptp64k

Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile

USPTO Granted Patents = 23 

% Patents Active = 30.4


Average Co-Inventor Count = 5.9

ph-index = 1

Forward Citations = 1(Granted Patents)


Company Filing History:

goldMedal23 out of 2,149 
 
Tencent America LLC
 patents

Years Active: 2025-2026

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Areas of Expertise:
Intra Prediction
Video Coding
Quantization
Motion Vector
Template Matching
Bilateral Filter
Extrapolation Filter
Image Compression
Adaptive Clipping
Residual Prediction
Multi-Quantizer
Boundary Filtering
23 patents (USPTO):Explore Patents
1. 12756859 - Affine motion vector predictor and affine merged motion vector by using lookahead/lookbehind motion vector (2026-10-06),
2. 12756843 - Implicit sub-pel position derivation for template matching-based intra prediction (2026-10-06),
3. 12720044 - Systems and methods for transform selection of extrapolation filter based intra prediction mode (2026-08-25),
4. 12713044 - EXTENDED QUANTIZER WITH FINER STEP SIZE (2026-08-18),
5. 12713004 - BILATERAL MATCHING AND DECODER SIDE MOTION VECTOR REFINEMENT WITH OUT-OF-FRAME BOUNDARY CONDITION (2026-08-18),
6. 12713002 - BOUNDARY FILTERING ON INTRABC AND INTRATMP CODED BLOCKS (2026-08-18),
7. 12707044 - Enhanced intra prediction with bilateral filter (2026-08-11),
8. 12701239 - Selective transform set in video coding (2026-08-04),
9. 12695866 - Intra mode coding based on template (2026-07-28),
10. 12689739 - Fine-grained intra prediction fusion (2026-07-21),
11. 12689730 - Multi-quantizer method for image and video compression (2026-07-21),
12. 12689725 - Regression model-based intra prediction (2026-07-21),
13. 12671821 - Systems and methods for adaptive extrapolation filter based intra prediction mode (2026-06-30),
14. 12659505 - Template-matching based motion shift refinement for subblock based motion vector (MV) predictor (2026-06-16),
15. 12641236 - State machine-based quantization shifting offset for video and image compression (2026-05-26),

Title: Innovations of Lien-Fei Chen

Introduction

Lien-Fei Chen is an accomplished inventor based in Palo Alto, California. He has made significant contributions to the field of video coding, holding two patents that showcase his innovative approach to technology. His work focuses on enhancing video compression techniques, which are crucial for efficient data transmission and storage.

Latest Patents

Chen's latest patents include "Systems and methods for dependent quantization based on current dequantization states" and "Systems and methods for subblock motion vector coding." The first patent describes a method of video coding that involves receiving a video bitstream containing multiple blocks and quantized transform coefficients. It details how to derive a dequantized transform coefficient and obtain an adjusted transform value to reconstruct video blocks effectively. The second patent outlines methods for encoding and decoding video, emphasizing the prediction of blocks in subblock mode and the derivation of motion vectors for improved video quality.

Career Highlights

Chen is currently employed at Tencent America LLC, where he continues to push the boundaries of video technology. His work has been instrumental in developing advanced video coding methods that enhance the efficiency and quality of video streaming services. His innovative contributions have positioned him as a key player in the tech industry.

Collaborations

Throughout his career, Chen has collaborated with talented individuals such as Xin Zhao and Shan Liu. These partnerships have fostered a creative environment that encourages the

Profile summary based on public USPTO records.
Data Sources: USPTO Patent Grant XML, Patent Center, EPO & CIPO • Normalized by IDiyas Innovation Graph. Methodology & provenance architecturePlease report any incorrect information to [email protected]
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