PATENT CLAIM ANALYSIS

Application Number: 16217095
Application Type: Utility
Filing Date: 2018-12
Publication Date: 2019-04
Patent Classification: ["355", "053000"]

Abstract:
Immersion lithography system and method using a sealed wafer bottom are described. One embodiment is an immersion lithography apparatus comprising a lens assembly comprising an imaging lens and a wafer stage for retaining a wafer beneath the lens assembly, the wafer stage comprising a seal ring disposed on a seal ring frame along a top edge of the wafer retained on the wafer stage, the seal ring for sealing a gap between an edge of the wafer and the wafer stage. The embodiment further includes a fluid tank for retaining immersion fluid, the fluid tank situated with respect to the wafer stage for enabling full immersion of the wafer retained on the wafer stage in the immersion fluid and a cover disposed over at least a portion of the fluid tank for providing a temperature-controlled, fluid-rich environment within the fluid tank.

Claim (Index 8):
An apparatus comprising:\n a fluid tank disposed over a wafer stage and having a first wall for retaining fluid; an imaging lens assembly configured to be at least partially disposed within the fluid tank; and a fluid outlet disposed adjacent the fluid tank, wherein the first wall of the fluid tank is moveable with respect to another portion of the fluid tank to allow the fluid to flow out of the fluid tank and into the fluid outlet.

Metadata:
- Claim Count in Document: 28.0
- Percentile: 98.0
- Lexical Diversity: 2.3125
- Patent Class: 355.0
- Transitional Phrase Type: open
- Component Type: 1
- Foreign Priority: False
- Related Applications: ['15639272', '11671046', '14727278', '13595734', '13482879']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.7223478209343107
- 35 USC 102 Novelty (BERT): 0.4936319981049418
- Combined Prediction Score: 0.6994762386513739
- Mean Citation Score: 293.5768740000001
- Max Citation Score: 305.1789
- Similarity Product: 260.23481413511035

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