PATENT CLAIM ANALYSIS

Application Number: 16169796
Application Type: Utility
Filing Date: 2018-10
Publication Date: 2019-03
Patent Classification: ["257", "774000"]

Abstract:
For simplifying the dual-damascene formation steps of a multilevel Cu interconnect, a formation step of an antireflective film below a photoresist film is omitted. Described specifically, an interlayer insulating film is dry etched with a photoresist film formed thereover as a mask, and interconnect trenches are formed by terminating etching at the surface of a stopper film formed in the interlayer insulating film. The stopper film is made of an SiCN film having a low optical reflectance, thereby causing it to serve as an antireflective film when the photoresist film is exposed.

Claim (Index 6):
A manufacturing method of a semiconductor integrated circuit device according to  claim 4 , wherein the first interlayer insulating film is an insulating film having silicon oxide as a main component, and the barrier insulating film is an SiCN film or two-layer film obtained by stacking an SiCO film over an SiCN film.

Metadata:
- Claim Count in Document: 26.0
- Percentile: 97.0
- Lexical Diversity: 1.76786
- Patent Class: 257.0
- Transitional Phrase Type: none
- Component Type: 0
- Foreign Priority: True
- Related Applications: ['11453882', '12141195', '13081332', '13525195', '12141172']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.9426233659205492
- 35 USC 102 Novelty (BERT): 0.5954347354625373
- Combined Prediction Score: 0.907904502874748
- Mean Citation Score: 486.80999
- Max Citation Score: 509.54678
- Similarity Product: 452.704784948051

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