ZURICH/BERLIN, May 3(Reuters) -Here are some of the main factors that may affect Swiss stocks on May 3:

NOVARTIS NOVN.S

Amgen Inc sued Novartis AG's Sandoz in New Jersey federal court Monday, accusing Sandoz's proposed versions of its multibillion-dollar bone-strengthening drugs Prolia and Xgeva of infringing several patents. (Full Story)

SIKA SIKA.S

Sika has completed its acquisition of Germany-based MBCC after receiving all necessary regulatory approvals, the Swiss chemicals company said on Tuesday. (Full Story)

COMPANY STATEMENTS

STRAUMANN HOLDING AG STMN.S

Q1 results due.

* OC Oerlikon OERL.S Q1 Group Sales Up At CHF 735 Mln - Reuters

ANALYSTS' VIEWS

BASILEA PHARMACEUTICA AG: BAADER HELVEA STARTS WITH BUY RATING; TARGET PRICE CHF 57.70

LOGITECH INTERNATIONAL SA: WEDBUSH RAISES TARGET PRICE TO $63 FROM $60

SIG GROUP AG: JEFFERIES RAISES TARGET PRICE TO CHF 28 FROM CHF 26

SKAN GROUP AG: CREDIT SUISSE RAISES TARGET PRICE TO CHF 95 FROM CHF 82

DORMAKABA HOLDING AG: CREDIT SUISSE CUTS TO NEUTRAL FROM OUTPERFORM; CUTS TARGET PRICE TO CHF 447 FROM CHF 590

LANDIS+GYR GROUP AG: TD COWEN RAISES TARGET PRICE TO CHF 87 FROM CHF 84

EX-DIVIDEND

SWISS LIFE HOLDING SLHN.S - 30 CHF/shr dividend

BALOISE HOLDING AG BALN.S - 7.40 CHF/shr dividend

HELVETIA HOLDING HELN.S - 5.90 CHF/shr dividend

ECONOMY

No major Swiss economic data scheduled.

Reporting by Zurich newsroom and Berlin Speed Desk

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