IC設計原相(Pixart)與美商安華高(Avago)間的CMOS專利訴訟，於2011.12.5.達成和解，各自撤回訴訟，並再簽訂包含Optical Finger Mouse(OFM)與optical pseudo trackball的專利及技術交互授權合約，根據這項新合約，原相須支付安華高約US00萬元授權金，分1年時間付清。
原相與安華高於2006.7.13.簽訂US6433780、US5686720、US5786804等3件專利授權合約，授權產品包含Optical Finger Mouse與optical pseudo trackball。
本案的系爭專利為US6,433,780，原由Agilent所擁有，Agilent將半導體部門獨立成Avago時，專利權同時移轉至Avago。原相於2003.10.31.，即曾對Agilent此專利提出確認專利不侵害之訴。而本次爭端再起的因素，也在確認該授權合約是否包括optical Psuedo Trackball。
Title : Seeing eye mouse for a computer system
Filing Date : 2001.1.2.
Issue Date : 2002.8.13.
An optical mouse images as an array of pixels the spatial features of generally any micro textured or micro detailed work surface below the mouse. The photo detector responses are digitized and stored as a frame into memory. Motion produces successive frames of translated patterns of pixel information, which are compared by autocorrelation to ascertain the direction and amount of movement. A hold feature suspends the production of movement signals to the computer, allowing the mouse to be physically relocated on the work surface without disturbing the position on the screen of the pointer. This may be needed if the operator runs out of room to physically move the mouse further, but the screen pointer still needs to go further. The hold feature may be implemented with an actual button, a separate proximity detector or by detecting the presence of a characteristic condition in the digitized data, such as loss of correlation or velocity in excess of a selected limit. A convenient place for an actual hold button is along the sides of the mouse near the bottom, where the thumb and the opposing ring finger grip the mouse. The gripping force used to lift the mouse engages the hold function. Hold may incorporate a brief delay upon either the release of the hold button, detection of proper proximity or the return of reasonable digitized values. During that delay any illumination control or AGC servo loops stabilize. A new reference frame is taken prior to the resumption of motion detection.