PATENT CLAIM ANALYSIS

Application Number: 15907812
Application Type: Utility
Filing Date: 2018-02
Publication Date: 2018-08
Patent Classification: ["438", "001000"]

Abstract:
A method for fabricating a self-aligned via structure includes forming a tri-layer mask on an ILD layer over a lower metal wiring layer, the tri-layer mask includes first and second insulating layers and a metal layer in between the insulating layers; defining a trench pattern through the first insulating layer and metal layer, the trench pattern having a first width; defining a first via pattern in a lithographic mask over the trench pattern, the first via pattern having a second width that is larger than the first width; growing a metal capping layer on an exposed sidewall of the trench pattern to decrease the first width to a third width that defines a second via pattern; transferring the trench pattern into the ILD layer to form a trench; and transferring the second via pattern through the ILD layer and into the metal wiring layer to form a via.

Claim (Index 13):
The dual damascene structure of  claim 12 , further comprising copper filling the trench and the via.

Metadata:
- Claim Count in Document: 50.0
- Percentile: 88.0
- Lexical Diversity: 2.90741
- Patent Class: 438.0
- Transitional Phrase Type: open
- Component Type: 1
- Foreign Priority: False
- Related Applications: ['14727132', '15423923', '15086440', '14755440', '10346384']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.8934470155484233
- 35 USC 102 Novelty (BERT): 0.5614762463524018
- Combined Prediction Score: 0.8602499386288212
- Mean Citation Score: 368.772812
- Max Citation Score: 470.78134000000006
- Similarity Product: 344.46158821438314

Labels:
- Claim Label 101: 1
- Claim Label 102: 1
- Claim Label 103: 1
- Claim Label 112: 1
- Combined Label: 1
- Label 101 Adjusted: 1

Dataset: test